Gemology
RUBELLITEOverview: Rubellite, when exhibiting a deep red color, is the most valuable form of tourmaline. Rubellite is a variety of Pink Tourmaline that is widely popular and impressive in color and brilliance. Rubellite's intense red color makes it a beautiful Gem for mounting. |
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RUBYOverview: Trace amounts of chromium gives Ruby its bright red color . Ruby is a term for red gemstones derived from the mineral corundum, formed primarily from aluminum oxide. A Ruby is actually a Sapphire of red color. It is an extremely hard and durable gemstone, well suited for all jewelry applications. Top quality Rubies are highly prized, and in larger sizes are frequently valued above all other gemstones, including Diamonds. Rubies over two carats are extremely rare and valuable. |
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SAPPHIREOverview : Sapphire is of the corundum class of minerals. The presence of trace impurities of iron and titanium is responsible for that beautiful, vibrant, deep blue color. It is an extremely hard and durable gemstone. Sapphires are available in virtually all colors but red. Red Sapphires are known as Rubies. Blue Sapphires are the most valuable, followed by Pink and Padparadscha Sapphires. Padparadscha Sapphires have orange pink or pink orange coloration and rival Blue Sapphires in value. |
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SARDONYXOverview: Sard is a brownish mineral, and when it forms together with the straight white bands of onyx, the resulting stone is called Sardonyx. Sardonyx is a banded variety of chalcedony which is cryptocrystalline quartz. Some Sardonyx is natural but much is produced by the staining of Agate. |
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SCAPOLITEOverview: Scapolite, which is Greek for "shaft", is commonly found in stubby to long prismatic crystals, hence the name. Scapolite is actually the name of a series between the sodium chloride rich mineral called marialite and the calcium carbonate rich mineral meionite. |
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SELENITEOverview: Selenite is the name given to colorless, transparent Gypsum. Selenite denotes the clear crystal variety that is less common. Selenite is the natural version of fiber optics. Crystals form in strange shapes often called Angel-wings or Fish-Bones. Selenite is also referred to as Gypsum and Alabaster. |
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SERANDITEOverview: Serandite was named in 1931 after J. M. Sérand, a mineral collector of West Africa who helped in the collection of Serandite on the island of Rouma, Los Archipelago, Guinea. It forms nice crystals that are often associated with other rare and interesting minerals. |
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SERPENTINEOverview: The name Serpentine refers to a group of predominately green minerals that occur in masses of tiny inter grown crystals. Its name comes from the word "serpent," or snake, and the suffix "-ine," or like. Serpentine is a translucent, waxy silicate of magnesium. The Serpentine is formed when olivine, or peridot, breaks down and forms in metamorphosed basalts. |
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