Opal Stone – Natural, Cabochon, White
Over a white background, the play of color in an opal is usually less intense. “Opal-white1,” photo by Ra’ike. Licensed under CC By 3.0.
Over a white background, the play of color in an opal is usually less intense. “Opal-white1,” photo by Ra’ike. Licensed under CC By 3.0.
Precisely how opals form is still a mystery to science. “Opale (Ethiopie) 5,” photo by Géry Parent. Licensed under CC By-SA 3.0.
This rock is a piece of volcanic breccia where reddish opal formed in gas pockets. Photo by James St. John. Licensed under CC By 2.0.
An unusual granular hyalite opal. Erongo Mountain, Usakos and Omaruru Districts, Erongo Region, Namibia. © Rob Lavinsky, www.iRocks.com.…
Common and precious opal replaced this bivalve’s original shell, making it a spectacular fossil. “Opalized fossil bivalve (Bulldog Shale,…
Like plastic opal imitations, Slocum Stone can have a variety of different appearances. Photo by Roy Goldberg. Public Domain.