الأربعاء، 11 أبريل 2012

About chalcedony





Chemical Composition and Properties derives its name acquired from Chalcedon, a anchorage on the Sea of Marmara, area accessory abstracts were mined and traded. Chalcedony seals from Minoan Crete date aback to the Bronze Age. Early bodies acclimated chalcedony as knife tips, tools, bowls and cups. Sponsored LinksGeological Sample PrepGeological Cutting, Grinding, Thin Sectioning Machines, Vacuum jigsVarietiesAlthough jewelers alone accredit to the white or light-colored array as chalcedony, chalcedony can be begin in abounding altered colors including white, red, blooming and affiliated brown. Altered black varieties accommodate flint, carnelian, agate, chrysoprase, onyx, and bloodstone.Agates anatomy from ablaze rocks and are acclimated primarily in jewelry.LocationAlthough the availability of the altered forms of chalcedony varies, chalcedony can be begin worldwide. Chalcedony can additionally be begin in ample accumulation in Turkey.Chalcedony is primarily acclimated for adornment and ornaments today. Abounding added forms of chalcedony are carved into beads, fabricated into cabochons or engraved. Historically, chalcedony was frequently acclimated for bowls, cups, bean applique and the abject of goblets. Sponsored LinksFashion Adornment Wholesalewww.viennois-online.comiSpindo Product Displaywww.ispindo.comASD Terraspec 4www.portableas.comPortable Infrared Mineral Analayser The New ASD Terraspec 4Herkimer Diamond Crystalswww.innervisioncrystals.net

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