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sapphire spinel

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  • sapphire — Synonyms and related words: adamant, agate, alexandrite, amethyst, aquamarine, azure, azure blue, azure colored, azurean, azured, azureous, beryl, beryl blue, berylline, bloodstone, blue, bluish, brilliant, carbuncle, carnelian, cerulean,… …   Moby Thesaurus

  • Samarian spinel — The Samarian Spinel is a 500 carat spinel gemstone that is the largest of its kind in the world. It is part of the Iranian Crown Jewels. OriginsIt, together with a smaller 270 carat Spinnel, were captured by the Persian King Nader Shah during his …   Wikipedia

  • List of gemstone species — There are over 130 species of minerals that have been cut into gemstones with 50 species in common use. These include: *Agate *Alexandrite and other varieties of chrysoberyl *Aquamarine and other varieties of beryl *Chrysocolla *Chrysoprase… …   Wikipedia

  • сапфировая шпинель — — [Англо русский геммологический словарь. Красноярск, КрасБерри. 2007.] Тематики геммология и ювелирное производство EN sapphire spinel …   Справочник технического переводчика

  • Diamond simulant — Due to its low cost and close visual likeness to diamond, cubic zirconia has remained the most gemologically and economically important diamond simulant since 1976. The high price of gem grade diamonds, as well as significant ethical concerns of… …   Wikipedia

  • Hope Diamond — French Blue redirects here. For the color, see French blue (color). Hope Diamond Hope Diamond in the Smithsonian Museum of Natural History Weight 45.52[1][2] …   Wikipedia

  • French Crown Jewels — Crown Jewels of France, on display at the Louvre with the crown and diadem of Empress Eugenie to the left, the set of Queen Marie Amélie in the centre and the crown of Louis XV to the right with the diadem of the Duchess of Angoulème …   Wikipedia

  • List of gemstones — A number of gemstones have gained fame, either because of their size and beauty or because of the people who owned or wore them.A list of famous gemstones follows Aquamarines*The Giant Aquamarine Diamonds : See List of famous diamonds… …   Wikipedia

  • Birthstones — ▪ Table Birthstones month traditional gemstone 20th century expansion synthetic supplement: trade name material of synthetic stone January garnet garnet dark red synthetic corundum February amethyst amethyst purple synthetic corundum March… …   Universalium

  • Ruby — This article is about the mineral. For other uses, see Ruby (disambiguation). Ruby Natural ruby crystals from Winza, Tanzania General Category …   Wikipedia

  • Verneuil process — /verr noy /; Fr. /verdd nue yeu/ a process for making synthetic rubies, sapphires, spinels, etc., by the fusion at high temperatures of powdered compounds. Also called flame fusion process. [named after A.V.L. Verneuil, 19th century French… …   Universalium

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