Onyx Directory, Info @ Tex.in From Tex.in – The Textile & Apparel Database

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.. ..  Tex.in Highlights: See What’s Next in Textiles @ Nextiles Onyx Directory, Info Content derived from Wikipedia article on Onyx Onyx From Wikipedia, the free encyclopedia This article is about the mineral. For other uses, see Onyx (disambiguation). Onyx is a banded variety of chalcedony, a cryptocrystalline form of quartz. The colors of its bands are white and black. Sardonyx is a variant in which the colored bands are sard (shades of red) rather than black. The agate-like sardonyx (banded agate). The specimen is one inch (2.5 cm) wide.It is usually cut as a cabochon, or into beads, and is also used for intaglios and cameos, where the bands make the image contrast with the ground. Some onyx is natural but much is produced by the staining of agate. One can view a close variant of this material in St.Mary's Church at Żebbuġ, Gozo. Technical details Chemical composition and name SiO2 - Silicon dioxide Hardness (Mohs scale) 7 Specific gravity 2.65 - 2.667 Refractive index (R.I.) 1.543 - 1.552 to 1.545 - 1.554 Birefringence 0.009 Optic sign Positive Optical character Uniaxial Culture and historical/mythical usage According to Rebbenu Bachya, the word Shoham in the verse Exodus 28:20 means "Onyx" and was the stone on the Ephod representing the Tribe of Joseph. There were also two Shoham stones on the shoulders of the Ephod. In the Dreamlands, a fictional location in the works of the author H. P. Lovecraft, the palaces of Kadath are built of onyx. End of Wikipedia content, http://en.wikipedia.org/wiki/Onyx .. ..  Web Resources for Onyx Onyx Onyx Information from International Colored Gemstone Association Onyx Info from CMich.edu Onyx Info from Encyclopedia of Gemstones Onyx Info from Jewelry Central Benefits of Wearing an Onyx Necklace from Gemstone Therapy Pictures Drusy Onyx Earrings Glass Globe Award Tex.in Main Sections Fiber - Yarn - Fabric - Home Textiles - Apparel - Accessories - Textile Network - News - Textiles & Society – Textile, Apparel Education & Research - Textile Technology Credits & Copyright: This page is licensed under the GNU Free Documentation License. It uses material from the ||Wikipedia article Onyx||

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