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>Mexican Opal>Multi-coloredCabochonsMexican OpalMulti-colored10x8mmOval8mmManmadehttp://www.firemountaingems.com/itemdetails/h203221cbH203221CBCabochon, Mexican "opal" (silica and epoxy) (man-made), 10x8mm calibrated oval. Sold individually.//image1.fmgstatic.com/images/p3221cbb.jpg11.5011.50As Low As $5.56 per cabochon