| JASPER (Chalcedony) Color: All colors mostly stirped or spotted Crystal Structure: Splintery Composition: SiO2 silicon dioxide Hardness: 6.5 - 7 SG: 2.58 - 2.91 RI: 1.53-1.54 DR: +0.004 Ocurrence: India, Russia, USA, France, Germany JASPERthe name is derived from the Greek and means "spotted stone". Some times it is called "hornstone", but usually this only refers to the gray variety. Jasper is a massive, fine grained, opaque variety of chalcedony, believed to protect against sight defects and drought. It occurs in shades of brown, grayish blue, red, yellow, and green, and mixtures of these. "Orbicular" jasper has white or gray, eye shaped patterns surrounded by red jasper. "Ribbon" jasper is striped and used in carvings. The patterns and location of Jasper has given it a variety of trade names such as, agate jasper, Egyptian jasper, Ocean jasper, riband jasper, poppy jasper, also plasma, prase, silex and many more.  Basic shipping charge will be $2.20 first-class w/insurance for $50.00. Shipping prices are figured into shopping cart.
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Revised March 15, 2004
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