Cubic Zirconia is a clear, hard, mass-produced gemstone cut to resemble a diamond. The mineral baddeleyite has the same chemical composition
April 27, 2006 (Press Release) --
Clip-back Earring: A hinged ring with a pad, called a "comfort back", at one end to secure the earring to the earlobe without requiring that the ear be pierced.
Cluster: Several stones grouped together in a jewelry setting.
Cocktail Ring: A large oversized ring set with precious or semiprecious stones popular during the 1940s and 1950s.
Cuban Link Chain: A standard cable chain with oval shaped links that are each decorated with a twisting pattern resembling rope.
Cubic Zirconia: (CZ) A clear, hard, mass-produced gemstone cut to resemble a diamond. The mineral baddeleyite has the same chemical composition, but to become a CZ the mineral must be heated to almost 5000 degrees Fahrenheit and have an oxide stabilizer such as yttrium or calcium added to keep it from reverting back to its original form when cooled. Almost all the rough CZ's in the market are composed of zirconium oxide and yttrium oxide, both of which are naturally white but combine to form a brilliant clear crystal. Like diamonds, the best cubic zirconia gems are colorless but colored forms are also manufactured. Vivid green CZ is sometimes referred to as C-OX, and CZ in numerous colors is frequently sold under various tradenames, such as the yellow CZ from Ceylon called "jargon". Cubic zirconia gemstones are cut in the same fashion as diamonds, and like diamonds the size of the gemstone is usually indicated by its weight in carats. The stone can also be measured in millimeter diameter size. Because the cubic zirconia stone is so dense and solid, it outweighs a diamond of the same millimeter size, weighing 1.7 times more than a diamond of the same millimeter diameter. It is also not as hard as a diamond rating only an 8 on the Mohs scale. Natural skin oils, soap, and dirt cause a film that dulls the beauty and luster of the cubic zirconia, just as it dulls real diamonds. The best cleaning agent for cubic zirconia is liquid dishwashing detergent, but other gem and jewelry cleaners can also be used.
Source: http://search.msn.com
Cluster: Several stones grouped together in a jewelry setting.
Cocktail Ring: A large oversized ring set with precious or semiprecious stones popular during the 1940s and 1950s.
Cuban Link Chain: A standard cable chain with oval shaped links that are each decorated with a twisting pattern resembling rope.
Cubic Zirconia: (CZ) A clear, hard, mass-produced gemstone cut to resemble a diamond. The mineral baddeleyite has the same chemical composition, but to become a CZ the mineral must be heated to almost 5000 degrees Fahrenheit and have an oxide stabilizer such as yttrium or calcium added to keep it from reverting back to its original form when cooled. Almost all the rough CZ's in the market are composed of zirconium oxide and yttrium oxide, both of which are naturally white but combine to form a brilliant clear crystal. Like diamonds, the best cubic zirconia gems are colorless but colored forms are also manufactured. Vivid green CZ is sometimes referred to as C-OX, and CZ in numerous colors is frequently sold under various tradenames, such as the yellow CZ from Ceylon called "jargon". Cubic zirconia gemstones are cut in the same fashion as diamonds, and like diamonds the size of the gemstone is usually indicated by its weight in carats. The stone can also be measured in millimeter diameter size. Because the cubic zirconia stone is so dense and solid, it outweighs a diamond of the same millimeter size, weighing 1.7 times more than a diamond of the same millimeter diameter. It is also not as hard as a diamond rating only an 8 on the Mohs scale. Natural skin oils, soap, and dirt cause a film that dulls the beauty and luster of the cubic zirconia, just as it dulls real diamonds. The best cleaning agent for cubic zirconia is liquid dishwashing detergent, but other gem and jewelry cleaners can also be used.
Source: http://search.msn.com
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