Opal

Doublet opal For gemstone use, most opal is cut and polished to form a cabochon. Solid opal refers to polished stones consisting... Read More

Synthetic Aurora opal Fine Crystalline Opals with a Non-Directional Pattern of Play-of-Color Aurora opals are available in different colors as black opals... Read More

Synthetic opal Opals of all varieties have been synthesized experimentally and commercially. The discovery of the ordered sphere structure of precious opal... Read More

Cat’s eye opal A cat’s eye opal is an opal with a cat’s eye effect visible on the top of the stone when... Read More

video This gemstone is usually coloured blue to blue-green. Most jewellers describe it as the colour of the Caribbean Sea. These stones... Read More

video Opal is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but... Read More

Welo Opal We know of course the Australian Opals. But for a few years a new opal apeare. The Welo opal. This... Read More

Fire Opal, from Mexico video Fire opal is a transparent to translucent opal, with warm body colors of yellow to orange to... Read More

Boulder Opal, from Australia video Opal is a hydrated amorphous form of silica (SiO2·nH2O), its water content may range from 3 to... Read More

Dyed Opal Many Ethiopian opals are sold in their natural state, and some are dyed opal treated. Their porosity makes them good... Read More