Identification of cat eye
In recent years, the market, there is a cat’s eye ring surface of glass fiber sales, set in gold or silver rings, the people Zhenjiamobian. The identification method is that when the rotating ring surface, the fake cat’s curved top can be several simultaneous band of light, but only one real cat’s eye. Cat eye eyeliner false dull, but true cat’s eye liner and flexible sheets together. True cat’s eye color mostly yellow or greenish brown, fake cat’s eye is the color variety, red, blue, green and other colors.
Chrysoberyl is second only to diamond hardness, Red Sapphire gem. And varieties of chrysoberyl alexandrite and cat’s-eye, three not only beautiful but also extremely rare because, so prices are very high. In chrysoberyl containing well-developed within the vacuum-like inclusions of gold emerald cut imposed after Kaposi Johnson, there is the effect of color changes in opal.Chrysoberyl is a beryllium aluminum oxide, chemical formula BeAl2O4. Is orthorhombic. Crystalline form often has a short columnar or plate. Cat’s-eye has a wide variety of colors, such as honey yellow, brown yellow, wine yellow, brownish yellow, yellowish green, yellowish, gray-green, of which the most valuable honey yellow. Transparent to translucent. Glass to the oil sheen. Refractive index 1.746-1.755, birefringence 0.008-0.010. Dichroism significantly, dispersion 0.015, non-homogeneous body. Hardness of 8.5, density 3.71-3.75 g / cc. Conchoidal fracture.
Cat’s-eye because it was like yo turn the color of cat eye generally be named, so the English transliteration is also known as ‘opal’ and only chrysoberyl cat’s eye cat’s eye can be called directly. Cat’s-eye with the color of honey, in particular, its a light mark on the sides will be mapped to a ‘3 Daoguang marks’, so its price has been judged very high. In terms of color, cream and lemon inferior honey color, but brown and gray of the evaluation is lower. Under the cat’s eye on the light. Can be traced out a very clear light, and turn it, the light will be generated article about the phenomenon of rock, this is the cat’s eye discoloration.
identify Sapphire Jewelry http://gemstone-winbowgemscom.blogspot.com/2010/06/identify-sapphire-jewelry.html
Deformation can be seen as cat’s eye effect brilliance , in addition to chrysoberyl than are other kinds. Such as calcium carbide, apatite, aquamarine, etc., in addition to asbestos, fibrous tissue in their relationship have the same effect ore [Tiger Eye], but the Green Cat’s Eye Gold is second to none. In the crown of the Shah set with a yellow-green cat’s eye, weight 147.7 kt.
Identification of cat eye http://winbowjewelry.edublogs.org/2010/06/22/identification-of-cat-eye/
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