Dive into the fiery depths of man-made opal--a kaleidoscope of opalescent color that dances in the light. All the splendor of natural opal, manufactured into a harder composite (4-5 Moh's scale) that withstands heat and cold. Beautifully resembling natural opals, man-made opals are comprised of approximately 80% silica with 20% added epoxy for hardness and consistency. Well calibrated to fit standard cabochon settings.
Cabochons>Other Opal Varieties>BluesCabochonsOther Opal VarietiesBlues8x6mmOval6mmManmadehttp://www.firemountaingems.com/itemdetails/h203200cbH203200CBCabochon, opal (man-made), dark blue, 8x6mm calibrated oval. Sold individually.//image3.fmgstatic.com/images/p3200cbb.jpg6.846.84As Low As $2.90 per cabochon