Our Gilson opal comes in many forms including rough, tumbled, chips and cabochons. We occasionally have 2nd quality material as well. Below and to the left are our different opal categories. Please email us if you have any questions or are looking for something we don't carry.
Black Opal is a greenish type of opal with black mottling and gold flecks. Usually found in ancient hot springs, the gem is usually tumbled smooth and cut cabochon. The phrase in the North "Black as a black opal" means, effectively, not very black (or evil) at all, and is used to describe good-hearted rogues and similar individuals who would be embarrassed by praise. A typical specimen has a base value of 1000gp.