Tag

Opal

doublet opal 

Doublet opal

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

Synthetic Aurora opal

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...
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synthetic opal 

Synthetic opal

Synthetic opal Opals of all varieties have been synthesized experimentally and commercially. The discovery of the ordered sphere structure of precious opal...
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cat's eye opal 

Cat’s eye opal

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...
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Blue opal, from Peru 

Blue opal, from Peru

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video This gemstone is usually coloured blue to blue-green. Most jewellers describe it as the colour of the Caribbean Sea. These stones...
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Green Opal from Cambodia 

Opal, from Mondulkiri, Cambodia

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

Welo Opal

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

Fire Opal

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

Boulder Opal

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

Dyed Opal

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