Топ-100 ⓘ Free online encyclopedia. Did you know? page 240

ⓘ Free online encyclopedia. Did you know? page 240

                                               

Chain

A chain is a serial assembly of connected pieces, called links, typically made of metal, with an overall character similar to that of a rope in that it is flexible and curved in compression but linear, rigid, and load-bearing in tension. A chain ...

                                               

Faberge egg

A Faberge egg is a jewelled egg created by the House of Faberge, in St. Petersburg, Imperial Russia. Possibly as many as 69 were created, of which 57 survive today. Virtually all were manufactured under the supervision of Peter Carl Faberge betwe ...

                                               

Diamond Trellis (Faberge egg)

The Diamond Trellis egg is a jewelled enameled Easter egg made by August Holmstrom under the supervision of the Russian jeweller Peter Carl Faberge in 1892. It is one of the Imperial Faberge eggs, made for Alexander III of Russia, who presented i ...

                                               

Empire Nephrite (Faberge egg)

The Empire Nephrite egg is a jewelled Easter egg, one of the Imperial Eggs made under the supervision of the Russian jeweller Peter Carl Faberge in 1901–1902 for Nicholas II of Russia, who presented it to his mother, the Dowager Empress Maria Feo ...

                                               

Karelian Birch (Faberge egg)

The Karelian Birch egg, also known as the Birch Egg, is a Faberge egg, one of two Easter eggs made under the supervision of Peter Carl Faberge in 1917 for the last Tsar of Russia Nicholas II. It was the second to last Faberge egg made, before Con ...

                                               

Bonbonniere (Faberge egg)

The Bonbonniere egg is one of the Faberge eggs created in the workshop of Peter Carl Faberge for the wealthy Russian industrialist Alexander Kelch who presented it to his wife as an Easter gift in 1903. Because it was not a gift from a Russian ts ...

                                               

Bouquet of Lilies Clock (Faberge egg)

The Bouquet of Lilies Clock egg is a jewelled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1899 for Tsar Nicholas II as an Easter gift to his wife, the Tsaritsa Alexandra Fyodorovna. It is currently held in ...

                                               

Spring Flowers (Faberge egg)

The Spring Flowers egg, sometimes referred to as the Imperial Spring Flowers egg, has been considered one of the Imperial Easter eggs attributed to Peter Carl Faberge. If it is an authentic Imperial egg, then the Spring Flowers egg would have bee ...

                                               

Pansy (Faberge egg)

The Pansy Egg or Spinach Jade Egg is one of the Imperial Russian Faberge eggs, and it was commissioned in 1899 by Tsar Nicholas II as an Easter gift for his mother, Dowager Empress Maria Feodoronova. Its design was overseen by the jeweler Peter C ...

                                               

Alexander Palace (Faberge egg)

The Alexander Palace Egg is a jewelled Easter egg made under the supervision of the Russian jeweler Peter Carl Faberge in 1908, for the then Tsar of Russia, Nicholas II. Nicholas presented it as an Easter gift to his wife, Alexandra Fyodorovna. I ...

                                               

Steel Military (Faberge egg)

The Steel Military egg is one of a series of approximately 50 Russian jewelled Easter eggs created under the supervision of the Russian jeweller Peter Carl Faberge. This particular egg was delivered to Alexandra Fyodorovna, the Russian Tsarina, o ...

                                               

Resurrection (Faberge egg)

The Resurrection egg is a jewelled rock crystal Easter egg believed to have been made by Michael Perchin under the supervision of the Russian jeweller Peter Carl Faberge sometime before 1899. Long considered to be a separate Faberge egg, it has b ...

                                               

Gatchina Palace (Faberge egg)

The Gatchina Palace egg is a jewelled, enameled Easter egg made under the supervision of the Russian jeweler Peter Carl Faberge in 1901, for Nicholas II of Russia. Nicholas II presented it to his mother, the Dowager Empress Maria Feodorovna, at E ...

                                               

Danish Palaces (Faberge egg)

The Danish Palaces egg is a Tsar Imperial Faberge egg, one of a series of fifty-two jeweled eggs made under the supervision of Peter Carl Faberge for the Russian Imperial family. It was crafted and delivered to the then Tsar of Russia, Alexander ...

                                               

Royal Danish (Faberge egg)

The Royal Danish egg is a jewelled enameled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1903, for Nicholas II of Russia, who presented the egg to his mother, the Dowager Empress Maria Feodorovna. One of six ...

                                               

Catherine the Great (Faberge egg)

Catherine the Great Egg also known as Grisaille Egg and Pink Cameo Egg is an Imperial Faberge egg, one of a series of fifty-four jewelled enameled Easter eggs made under the supervision of Peter Carl Faberge for the Russian Imperial family. It wa ...

                                               

Caucasus (Faberge egg)

The Caucasus Egg is a jewelled enameled Easter egg made by Michael Perkhin under the supervision of the Russian jeweller Peter Carl Faberge in 1893. The egg was made for Alexander III of Russia, who presented it to his wife, Empress Maria Feodoro ...

                                               

Clover Leaf (Faberge egg)

The Clover Leaf Egg is a jewelled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1902 for Tsar Nicholas II of Russia. It was presented by Nicholas as an Easter gift to his wife, the Tsarina Alexandra Fyodorovn ...

                                               

Colonnade (Faberge egg)

The Colonnade egg is a jewelled enameled Easter egg made by Henrik Wigstrom under the supervision of the Russian jeweller Peter Carl Faberge in 1910. The egg was made for Nicholas II of Russia, who presented it to his wife, Alexandra Feodorovna t ...

                                               

Cradle with Garlands (Faberge egg)

The Cradle with Garlands egg is an Imperial Faberge egg, one of a series of fifty-four jewelled enameled Easter eggs made under the supervision of Peter Carl Faberge for the Russian Imperial family. It was an Easter 1907 gift for Tsarina Maria Fe ...

                                               

Alexander III Equestrian (Faberge egg)

The Alexander III Equestrian egg is a jewelled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1910, for the last Tsar of Russia, Nicholas II. Tsar Nicholas presented the egg to his mother the Dowager Empress, ...

                                               

Basket of Flowers (Faberge egg)

The Basket of Flowers egg is a jewelled enameled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1901. The egg was made for Nicholas II of Russia, who presented it to his wife, the Empress Alexandra Feodorovna. ...

                                               

Imperial Coronation (Faberge egg)

The Imperial Coronation egg is a jewelled Faberge egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1897 by Faberge ateliers, Mikhail Perkhin and Henrik Wigstrom. The egg was made to commemorate Tsaritsa, Empress Alexan ...

                                               

Red Cross with Imperial Portraits (Faberge egg)

The Red Cross with Imperial portraits egg is a jewelled and enameled Easter egg made by Henrik Wigstrom under the supervision of the Russian jeweller Peter Carl Faberge in 1915, for Nicholas II of Russia, who presented the egg to his mother, the ...

                                               

First Hen (Faberge egg)

The First Hen egg or Jeweled Hen egg is a Tsar Imperial Faberge egg. It became the first in a series of more than 50 such jeweled eggs made under the supervision of Peter Carl Faberge for the Russian Imperial family. It was delivered to Tsar Alex ...

                                               

Bay Tree (Faberge egg)

The Bay Tree egg is a jewelled nephrite and enameled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1911, for Nicholas II of Russia who presented the egg to his mother, the Dowager Empress Maria Feodorovna, on ...

                                               

Lilies of the Valley (Faberge egg)

The Lilies of the Valley Egg is a jewelled Faberge egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1898 by Faberge ateliers. The supervising goldsmith was Michael Perchin. The egg is one of the two eggs in the Art Nou ...

                                               

Swan (Faberge egg)

The Swan Egg is a Faberge egg, one in a series of fifty-two jewelled eggs made under the supervision of Peter Carl Faberge. Commissioned in 1906 by Tsar Nicholas II, the egg was presented to the Dowager Empress Maria Feodorovna on Easter that yea ...

                                               

Mosaic (Faberge egg)

The Mosaic egg is a jewelled enameled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1914. The egg was made for Nicholas II of Russia, who presented it to his wife, the Empress Alexandra Feodorovna on Easter 1 ...

                                               

Moscow Kremlin (Faberge egg)

The Uspenski Cathedral Egg or Moscow Kremlin Egg is a jewelled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1906 for Tsar Nicholas II of Russia. It was presented by Nicolas II as an Easter gift to his wife, ...

                                               

Napoleonic (Faberge egg)

The Napoleonic egg, sometimes referred to as the Imperial Napoleonic egg, is a Faberge egg, one of a series of fifty-two jewelled eggs made under the supervision of Peter Carl Faberge. It was created in 1912 for the last Tsar of Russia Nicholas I ...

                                               

Necessaire (Faberge egg)

The Necessaire egg is a Tsar Imperial Faberge egg, one of a series of fifty-two jeweled eggs made under the supervision of Peter Carl Faberge for the Russian Imperial family. It was crafted and delivered to the then Tsar of Russia, Alexander III ...

                                               

Order of St. George (Faberge egg)

The Order of St. George Egg, also called the Cross of St. George Egg, is an enameled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1916, for Nicholas II of Russia, who presented the egg to his mother, the Dow ...

                                               

Peacock (Faberge egg)

The Peacock egg is a jewel and rock crystal Easter egg made by Dorofeiev under the supervision of the Russian jeweller Peter Carl Faberge in 1908. It was made for Nicholas II of Russia, who presented the egg to his mother, the Dowager Empress Mar ...

                                               

Alexander III Commemorative (Faberge egg)

The Alexander III Commemorative egg is a jewelled enameled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1909, for Nicholas II of Russia, who presented it to his mother, the Dowager Empress Maria Feodorovna. ...

                                               

Pelican (Faberge egg)

The Dowager Faberge egg, is a jewelled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1898. The egg was made for Nicholas II of Russia, who presented it to his mother, the Dowager Empress Maria Feodorovna on E ...

                                               

Cockerel (Faberge egg)

The Cockerel Egg was crafted by Peter Carl Faberge in his set of Imperial Faberge eggs. The egg was given in 1900 by Tsar Nicholas II to Empress Maria Feodoronova as a gift. The egg has a mechanism on the top rear that enables its bird to come ou ...

                                               

Twelve Monograms (Faberge egg)

The Twelve Monograms egg, also known as the Alexander III Portraits egg, is an Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1896 for Tsar Nicholas II of Russia. It was presented by Nicholas II to his mother, ...

                                               

Fifteenth Anniversary (Faberge egg)

The Fifteenth Anniversary Egg is an Imperial Faberge egg, one of a series of fifty-two jewelled enameled Easter eggs made under the supervision of Peter Carl Faberge for the Russian Imperial family. It was an Easter 1911 gift for Tsaritsa Alexand ...

                                               

Peter the Great (Faberge egg)

The Peter the Great Egg is a jewelled Easter egg made under the supervision of the Russian jeweler Peter Carl Faberge in 1903 for the last Tsar of Russia, Nicholas II. Tsar Nicholas presented the egg to his wife, the Czarina Alexandra Fyodorovna. ...

                                               

Renaissance (Faberge egg)

The Renaissance egg is a jewelled agate Easter egg made by Michael Perchin under the supervision of the Russian jeweller Peter Carl Faberge in 1894. The egg was made for Alexander III of Russia, who presented it to his wife, the Empress Maria Feo ...

                                               

Rocaille (Faberge egg)

The Rocaille egg is one of the Faberge eggs created in the workshop of Peter Carl Faberge for the wealthy Russian industrialist Alexander Kelch who presented it to his wife as an Easter gift in 1902. Because it was not a gift from a Russian tsar ...

                                               

Rothschild (Faberge egg)

The Rothschild egg is a jewelled, enameled, decorated egg that was made under the supervision of the Russian jeweller Peter Carl Faberge by the workshop of Michael Perchin in 1902. Beatrice Ephrussi de Rothschild presented this egg to Germaine Ha ...

                                               

Scandinavian (Faberge egg)

The Scandinavian egg, is an enamelled Easter egg made by Michael Perchin under the supervision of the Russian jeweller Peter Carl Faberge between 1899 and 1903. The egg was made for a St. Petersburg client, one of the very few eggs that were not ...

                                               

Constellation (Faberge egg)

The Constellation Egg is one of two Easter eggs designed under the supervision of Peter Carl Faberge in 1917, for the last Tsar of Russia, Nicholas II. It was the last Imperial Faberge egg designed. It remains unfinished.

                                               

Pine Cone (Faberge egg)

The Pine Cone egg is a jewelled enameled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1900. The egg was made for Alexander Kelch, who presented it to his wife, Barbara Kelch-Bazanova.

                                               

Red Cross with Triptych (Faberge egg)

The Red Cross with Triptych egg, also known as Red Cross Triptych Egg or Red Cross Egg with Resurrection Triptych, is an enameled Easter egg made under the supervision of the Russian jeweler Peter Carl Faberge in 1915, for Nicholas II of Russia. ...

                                               

Cherub with Chariot (Faberge egg)

The Cherub with Chariot egg or Angel with Egg in Chariot is a Tsar Imperial Faberge egg, one of a series of fifty-two jeweled eggs made under the supervision of Peter Carl Faberge for the Russian Imperial family. It was crafted and delivered in 1 ...

                                               

Tsarevich (Faberge egg)

The Tsarevich Egg, also known as the Czarevich Egg, is a Faberge egg, one of a series of jewelled eggs made under the supervision of Peter Carl Faberge. It was created in 1912 for Empress Alexandra Fyodorovna as a tribute by Faberge to her son th ...

                                               

Apple Blossom (Faberge egg)

The Apple Blossom egg, also known as the Jade Chest egg, is a Faberge egg created in the workshop of Peter Carl Faberge for the wealthy Russian industrialist Alexander Kelch who presented it to his wife as an Easter gift in 1901. Because it was n ...

                                               

Nobel Ice (Faberge egg)

The Nobel Ice Egg, sometimes also referred to as the Snowflake egg, is a jewelled Faberge egg made under the supervision of the Russian jeweller Peter Carl Faberge for the Swedish-Russian oil baron and industrialist Emanuel Nobel between 1913 and ...

                                               

House of Faberge

The House of Faberge is a jewellery firm founded in 1842 in Saint Petersburg, Russia, by Gustav Faberge, using the accented name Faberge. Gustavs sons, Peter Carl and Agathon, and grandsons followed him in running the business until it was nation ...

                                               

Peter Carl Faberge

Peter Carl Faberge, also known as Karl Gustavovich Faberge, was a Russian jeweller best known for the famous Faberge eggs made in the style of genuine Easter eggs, but using precious metals and gemstones rather than more mundane materials. He was ...

                                               

Rosebud (Faberge egg)

The Rosebud egg is a jewelled enameled Easter egg made by Michael Perchin under the supervision of the Russian jeweller Peter Carl Faberge in 1895, for Nicholas II of Russia, who presented the egg to his wife, Empress Alexandra Feodorovna. It was ...

                                               

Duchess of Marlborough (Faberge egg)

The Duchess of Marlborough egg, also known as the Pink Serpent egg, is a jewelled enameled Easter egg made by Michael Perchin under the supervision of the Russian jeweller Peter Carl Faberge in 1902. The Duchess of Marlborough Egg is the only lar ...

                                               

Kelch Chanticleer (Faberge egg)

The Kelch Chanticleer egg is a jewelled, enameled Easter egg made by Michael Perchin under the supervision of the Russian jeweller Peter Carl Faberge in 1904. It was made for the Russian industrialist Alexander Ferdinandovich Kelch, who presented ...

                                               

Rose Quartz (Faberge egg)

The Rose Quartz Egg or Pink Quartz Egg is an Easter egg made by Michael Perkhin under the supervision of Carl Faberge. It was ordered by an unknown private customer in St. Petersburg. It is currently in a private collection.

                                               

Twelve Panel (Faberge egg)

The Twelve Panel is a jewelled enameled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1899. The egg was made for Alexander Kelch, who presented it to his wife, Barbara Kelch-Bazanova.

                                               

Faberge Museum in Saint Petersburg, Russia

The Faberge Museum in Saint Petersburg, Russia, is a privately owned museum which was established by Viktor Vekselberg and his Link of Times foundation in order to repatriate lost cultural valuables to Russia. The museum is located in the center ...

                                               

Faberge Museum

The Faberge Museum is a privately owned museum located in the German spa city of Baden-Baden, dedicated to items made by the Russian jewellery firm Faberge. It was opened by Russian art collector Alexander Ivanov on 15 May 2009.

                                               

Rose Trellis (Faberge egg)

The Rose Trellis Faberge egg is a jewelled enameled imperial Easter egg made in Saint Petersburg, Russia under the supervision of the jeweler Peter Carl Faberge in 1907, for Tsar Nicholas II of Russia. It was presented by Tsar Nicholas II to his ...

                                               

Mauve (Faberge egg)

The Mauve egg is a jewelled Easter egg made under the supervision of the Russian jeweller Peter Carl Faberge in 1897, for Nicholas II of Russia, who presented it to his mother, the Dowager Empress Maria Feodorovna on April 18, 1897. One of six eg ...

                                               

Bench jeweler

A bench jeweler is an artisan who uses a combination of jewelry-making skills to make and repair jewelry. The jewelry making arts can be subdivided into a very great many categories of specialized skills. Some of the more common skills that a ben ...

                                               

Openwork

Openwork or open-work is a term in art history, architecture and related fields for any technique that produces decoration by creating holes, piercings, or gaps that go right through a solid material such as metal, wood, stone, pottery, cloth, le ...

                                               

Gemstone

A gemstone is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. However, certain rocks and occasionally organic materials that are not minerals are also used for jewelry and are therefore oft ...

                                               

Pearl

A pearl is a hard, glistening object produced within the soft tissue of a living shelled mollusk or another animal, such as fossil conulariids. Just like the shell of a mollusk, a pearl is composed of calcium carbonate in minute crystalline form, ...

                                               

Ruby

A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum. Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond. ...

                                               

Amethyst

Amethyst is a violet variety of quartz. The name comes from the Koine Greek ἀμέθυστος amethystos from ἀ- a-, "not" and μεθύσκω methysko / μεθύω methyo, "intoxicate", a reference to the belief that the stone protected its owner from drunkenness. T ...

                                               

Gypsum

Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 2H 2 O. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard/sidewalk chalk, and d ...

                                               

Jewel

Jewel DeNyle born 1976, American pornographic movie star, sometimes credited as "Jewel" Jewel singer born Jewel Kilcher, American singer and actress Jewel Mische born 1990, Philippine/American actress, winner of StarStruck John Jewel 1522–1571, b ...

                                               

Jadeite

Jadeite is a pyroxene mineral with composition NaAlSi 2 O 6. It is monoclinic. It has a Mohs hardness of about 6.5 to 7.0 depending on the composition. The mineral is dense, with a specific gravity of about 3.4.

                                               

Agate

Agate is a common rock formation, consisting of silica, chalcedony and quartz as its primary components, the formation consists of a wide variety of colours and grain size. Agates are primarily formed within volcanic rocks and metamorphic rocks. ...

                                               

Moss agate

Moss agate is a semi-precious gemstone formed from silicon dioxide. It is a form of chalcedony which includes minerals of a green colour embedded in the stone, forming filaments and other patterns suggestive of moss. The field is a clear or milky ...

                                               

Jet (gemstone)

Jet is a type of lignite, a precursor to coal, and is a gemstone. Unlike many gemstones, jet is not a mineral, but is rather a mineraloid. It is derived from wood that has changed under extreme pressure. The English noun "jet" derives from the Fr ...

                                               

Pyroxmangite

Pyroxmangite has the general chemical formula of MnSiO 3. It is the high-pressure, low-temperature dimorph of rhodonite. It was first described in 1913 and named for the mineral group, pyroxenes, and is known as the manganese member. It forms a s ...

                                               

Opal

Opal is a hydrated amorphous form of silica ; its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are ...

                                               

Onyx

Onyx primarily refers to the parallel banded variety of the silicate mineral chalcedony. Agate and onyx are both varieties of layered chalcedony that differ only in the form of the bands: agate has curved bands and onyx has parallel bands. The co ...

                                               

Skan'

A Skan is the Russian counterpart of a filigree. It is a kind of jewelry art with a thin layer of gold, silver or copper wire wound in cords or soldered on a metal background. Skans are often supplemented by tiny silver or gold beads and enamel.

                                               

Cubic zirconia

Cubic zirconia is the cubic crystalline form of zirconium dioxide. The synthesized material is hard and usually colorless, but may be made in a variety of different colors. It should not be confused with zircon, which is a zirconium silicate. It ...

                                               

Chrysoprase

Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony that contains small quantities of nickel. Its color is normally apple-green, but varies to deep green. The darker varieties of chrysoprase are also referred to as prase ...

                                               

Charm bracelet

A charm bracelet is a type of bracelet which carries personal jewelled ornaments or "charms", such as decorative pendants or trinkets. The decorative charms usually carry personal or sentimental attachment by the owner.

                                               

Niello

Niello is a black mixture, usually of sulphur, copper, silver, and lead, used as an inlay on engraved or etched metal, especially silver. It is added as a powder or paste, then fired until it melts or at least softens, and flows or is pushed into ...

                                               

Pandora (jewelry)

Pandora A/is an international Danish jewellery manufacturer and retailer founded in 1982 by Per Enevoldsen. The company started as a family-run jewellery shop in Copenhagen. Pandora is known for its customizable charm bracelets, designer rings, n ...

                                               

Swarovski

Swarovski) is an Austrian producer of glass headquartered in Wattens, Austria. Swarovski has been a family-owned business since it was founded in 1895 by Daniel Swarovski. The company is split into three major industry areas: the Swarovski Crysta ...

                                               

Chrysoberyl

The mineral or gemstone chrysoberyl is an aluminate of beryllium with the formula BeAl 2 O 4. The name chrysoberyl is derived from the Greek words χρυσός chrysos and βήρυλλος beryllos, meaning "a gold-white spar". Despite the similarity of their ...

                                               

Tantalite

The mineral group tantalite is the primary source of the chemical element tantalum. It is chemically similar to columbite, and the two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite" in many mineral gu ...

                                               

Tanzanite

Tanzanite is the blue and violet variety of the mineral zoisite, caused by small amounts of vanadium, belonging to the epidote group. Tanzanite is only found in Tanzania, in a very small mining area long and 2 km wide) near the Mirerani Hills. Ta ...

                                               

Tack

Tack sewing also baste or pin, quick, temporary stitching intended to be removed Shoe tack, a type of cut nail, used in upholstery, shoe making and saddle manufacture Tack weld, a specific short and often temporary type of weld Thumbtack or drawi ...

                                               

Carnelian

Carnelian is a brownish-red mineral commonly used as a semi-precious gemstone. Similar to carnelian is sard, which is generally harder and darker. Both carnelian and sard are varieties of the silica mineral chalcedony colored by impurities of iro ...

                                               

Tiger's eye

Tigers eye is a chatoyant gemstone that is usually a metamorphic rock with a golden to red-brown colour and a silky lustre. As members of the quartz group, tigers eye and the related blue-coloured mineral hawks eye gain their silky, lustrous appe ...

                                               

Chalcedony

Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. These are both silica minerals, but they differ in that quartz has a trigonal crystal structure, while moganite is monoclinic. Chalcedony ...

                                               

Rhodonite

Rhodonite is a manganese inosilicate, SiO 3 and member of the pyroxenoid group of minerals, crystallizing in the triclinic system. It commonly occurs as cleavable to compact masses with a rose-red color, often tending to brown because of surface ...

                                               

Quartz

Quartz is a hard, crystalline mineral composed of silicon and oxygen atoms. The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formul ...

                                               

Elbaite

Elbaite, a sodium, lithium, aluminium boro-silicate, with the chemical composition NaAl 6 Si 6 O 18 3 4, is a mineral species belonging to the six-member ring cyclosilicate tourmaline group. Elbaite forms three series, with dravite, with fluor-li ...

                                               

Nephrite

Nephrite is a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite or actinolite. The chemical formula for nephrite is Ca 2 5 Si 8 O 22 2. It is one of two different mineral species called jade. The other mineral species ...

                                               

Almandine

Almandine, also known as almandite, is a species of mineral belonging to the garnet group. The name is a corruption of alabandicus, which is the name applied by Pliny the Elder to a stone found or worked at Alabanda, a town in Caria in Asia Minor ...

                                               

Amazonite

Amazonite, also known as Amazonstone, is a green tectosilicate mineral, a variety of the potassium feldspar called microcline. Its chemical formula is, which is polymorphic to orthoclase. Its name is taken from that of the Amazon River, from whic ...

                                               

Apatite

Apatite is a group of phosphate minerals, usually referring to hydroxyapatite, fluorapatite and chlorapatite, with high concentrations of OH −, F − and Cl − ions, respectively, in the crystal. The formula of the admixture of the three most common ...

                                               

Augelite

Augelite is an aluminium phosphate mineral with formula: Al 2 3. The shade varies from colorless to white, yellow or rose. Its crystal system is monoclinic. It was first described by Christian Wilhelm Blomstrand for an occurrence in Vastanå iron ...

                                               

Beryl

Beryl is a mineral composed of beryllium aluminium cyclosilicate with the chemical formula Be 3 Al 2 Si 6 O 18. Well-known varieties of beryl include emerald and aquamarine. Naturally occurring, hexagonal crystals of beryl can be up to several me ...

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