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Home > Diamond Education > Birth Stones >


December


Blue Zircon - Arabic for "vermilion"

Blue ZirconAlthough the name zircon comes from the Arabic "zargoon' meaning vermilion or golden coloured, zircons also occur in a wide range of subtle greens and browns and are occasionally colourless. Such stones have been used for many centuries in Indian and Sinhalese jewelry. In western jewelry zircons are most familiar as lustrous and fiery vivid blue, golden or colourless stones which are usually cut as round brilliants. These colours are produced artificially by heating brown zircon from Thailand, Kampuchea and Vietnam. Heating in an oxygen-free atmosphere produces blue zircon, which may then be heating in air to give the golden colour. Both processes produce some colourless material. Heat-induced colours sometimes fade on exposure to light but may be restored by careful reheating. Zircon resembles diamond in its fine lustre and fire, so that colourless stones have been both mistakenly identified as diamonds and purposely used as diamond stimulants. Zircon is easily distinguished by signs of wear and double refraction. Although zircon is moderately hard it can be very brittle, and the facet edges of cut stones are easily chipped in wear. It is also strongly doubly refractive, the facet edges appearing doubled when viewed through the stone. Zircon contains traces of uranium or thorium which produce a distinctive absorption spectrum. Radiation from these elements may gradually disrupt and transform the tetragonal crystalline structure to a "metamict" state. Such zircons are usually green and cloudy, show only slight double refraction, and have lower refractive indices, density and hardness

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Perfectly designed diamond rings online and highest quality diamond engagement ring, exclusive diamond wedding rings or distinctive and stunning diamond jewellery at your finger tips, Jason Withers at Original Diamonds understands the significance and importance of quality and beauty and wear ability of your diamond engagement ring and wedding ring set, all "diamonds are forever". Jason Withers has been directly operating with De Beers Site diamond cutting and polishing houses his whole life , including handling and organizing of diamond supply at major international level as well as business to consumer as his role as a brilliant jewellery designer, the creation of stunning diamond rings using the best quality hearts and arrows ideal cut diamonds at the most affordable prices is a passion.

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