7.10 CTS HONDURAN NATURAL ROUGH OPAL [VS5847 ]

Item Information

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Weight (carats) not provided
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HONDURAN  ROUGH OPAL

 

This is natural untreated  rough opal mined in Honduras. It is formed in areas of volcanic ash so the back has black ash as a base.Full faced stones are hard to come by with most of the material matrix.There is a natural fracture on the top of the stone.


Weight 7.10 cts app

Size 20x15x4 mm app


 

Honduras has hundreds of opal prospects and mines, although most high- quality opal is produced from small informal mines in the cool tropical highlands of southwestern Honduras. In particular, the Tablon mine near Erandique is based on the country’s biggest deposit where the opal occurs in large blocks of black basalt. Miners hand-chisel the boulders to extract small vertical veinlets of thin, colourful precious opal, including black-seam opals and black-matrix opals. Seam opals, varying from near paper-thin to rare specimens more than 1 cm thick, have a crystal clear, milky white, slightly blue or brownish orange colouration because they are so thin, the gems tend to be cut with the black basalt forming the back of the stone forming black-matrix opals.

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Pricing & Details

Bid Increment $1.00
Starting Bid $225.00
Auction ID 322858
Watchers 10 watching
Viewed 2,321 times
Starts 4th Dec 2016 10:03pm PST
Ends 6th Dec 2016 10:00pm PST

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