Single Detail Page Misc: 8.48 ct.NATURAL CABOCHON BLUE CHALCEDONY OVAL AFRICA - from Hibiscus Express - 8.48 ct.NATURAL CABOCHON BLUE CHALCEDONY OVAL AFRICA * TYPE CHALCEDONY CLARITY TRANSLUCENT PIECE 1 COLOR BLUE WEIGHT 8.48 cts. HARDNESS 7 SIZE 14 x 12.5 x 6.6 mm. LUSTER GOOD SHAPE OVAL ORIGIN AFRICA * A nice blue bubble or botroiydal Chalcedony from Turkey. It is slightly translucent. This lovely material has a natural bubbly, shiny surface. * Chalcedony (kal SED' nee) is any form of microcrystalline quartz , where the crystals are too small to be seen without high magnification. However, in the rock world, only the translucent or transparent, single color types are sold as "chalcedony". Other colors are white, blue, purple, pink, yellow, orange or red. The various types differ in color due to metallic impurities, such as iron, nickel, copper, and titanium present during crystallization. * Chalcedony forms in rounded crusts, rinds or stalactites in volcanic and sedimentary rocks. The name probably comes from Chalcedon or Calchedon, an ancient port city on the Sea of Marmara in modern-day Turkey. They usually have a waxy luster and a hardness of 7. Chalcedonies are tough gems, good for all jewelry applications and require no special care in wearing or cleaning.
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