Item Information

Dimensions (mm) not provided
Weight (carats) not provided



This is a natural specimen that we have rubbed down to expose the colour bar-it can be further polished which will enhance it more.If you are interested in a polished stone visit our sister site SEDAGEMS.

SIZE   32X 22 X18.5  MM



 This stone was mined in Mexico but it is found in Arizona also.The stone appears to glow inside like opal.The gem is thought to be formed when hot water saturated with silica and lava oxide invade cavities in the rock and cool.Chalcendony with iron oxide begin to grow on the surface.The iron oxide gives the basic brown colour to the stone.It grows layers of silica and iron oxide. These alternating silica and iron oxide cause the brillant fire from the stone.After the iron oxide ran out of the specimen colourless chalcedony contined to grow over it.



1 bid placed so far
$25.00 carlosmatias
22nd Nov 2016 8:05pm PST
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Audit Information

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Pricing & Details

Bid Increment $1.00
Starting Bid $25.00
Auction ID 100683
Watchers 4 watching
Viewed 993 times
Starts 22nd Nov 2016 3:02am PST
Ends 22nd Nov 2016 8:05pm PST

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