Good specimen, slightly fluorescent.
|Dimensions (mm)||not provided|
|Weight (carats)||not provided|
VIRGIN VALLEY OPAL
This is a specimen of wood replacement opal from Virgin Valley in Nevada USA.The area is known for its unusual fire play in wood ,limp casts and bark replacement.There is some opal attaached to this specimen.We have taken the photo wet.Great collectors item.
Weight 12.4 cts app
Size 19.5x 17.5x8.1 mm app
This opal is believed to be app 14 -15 million years old.The opal has a tendancy to craze when dried too fast as it contains up to 14 % water. We just know we lose most to drying but a small percentage is stable. Some cutters store the opal in mineral oil for a year and change it every 3 months before cutting.
As with all our stock we offer a full refund provided it is not touched in any way.
|Starts||19th Aug 2009 11:20pm PDT|
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