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Once this rough opal is cut and polished, the play-of-color will most likely be very flashy!
Hidden Treasure
This is an opal nodule, a roundish stone containing the precious gem.
Gray Background
Bright colors flash against a gray background in this opal cabochon.
Opal flashes colors as you turn the stone or move around it. This phenomenon is called play-of-color. An opal might show a single color, two or three colors, or all the colors of the rainbow! The best play-of-color is the brightest; if it also has all the rainbow colors, then it is very rare and valuable. Opals are known by their background colors and are called black, white, gray, or fire opals.
IMG - Gem Factoid Color - Multicolored IMG - Gem Factoid Color - Orange
Opal shows a flashing display of different colors on a white, black, or gray background. Fire opals are usually orangy red.



The famous Roman scholar Pliny described opal colors as deep and rich as the colors used by painters.
Famous Opal
IMG - Opal Factoid 136280 200x200
Nessie is a two-meter (6.6-foot) pre-historic reptile called a pliosaur. Nessie’s bones turned into opal over millions of years.
Cody Opal, courtesy of The National Opal Collection
what's in a name?
(noun) The Romans gave opal its name – opalus, meaning “precious stone.”

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