Yellow opal

Chemical Formula: SiO2·nH2O Locality: World wide occurrences. Name Origin: From the Old Indian upala - "precious stone." Opal is a hydrated a

An opal featuring a rare six-rayed star is examined in GIA's Bangkok lab.

Rosenkranz Opal | retired opal miner ,opal cutter and opal merchant who spends most of his time now trying to grow orchids ..

OPAL

What would you say when I ask which gemstone is the prettiest? Most will probably say diamond, ruby or sapphire. But I’m going to show you some of the most beautiful gemstones that you may not know. This list combines commonly known gems, like opal and amethyst, with some rare and exotic minerals. They represent some… Read More »50 Most Beautiful Gemstones You’ve Ever Seen

Ethiopian crystal opal carving http://treasurion.com/plasma-crystal-welo.html

Mexican Opals including Mexican Boulder Opals, Mexican Flash Opals, Mexican Black Opals

Ring with a Welo Opal cabochon of 21.33 ct. and fine lines of white diamond, set in 750/000 yellow gold. Golden Rainbow ring Welo Opal diamonds