247.8 CTS ROUGH BRAZIL OPAL IN FELDSPAR SLAB [VS6820]

Item Information

Dimensions (mm) 54 x 39 x 9mm
Weight (carats) 247.8 carats
Colors

BRAZIL OPAL IN FELDSPAR

This is a natural untreated slab of opal with feldspar.
Mined in brazil
We have taken a picture of both sides and the stone is wet..
it can be cut as a large specimen or cut into smaller stones.

Feldspar is the name given to a group of minerals distinguished by the presence of alumina and silica in their chemistry.  This group includes aluminum silicates of soda, potassium, or lime. It is the single most abundant mineral group on Earth.  They account for an estimated 60% of exposed rocks, as well as soils, clays, and other unconsolidated sediments, and are principal components in rock classification schemes. The minerals included in this group are the orthoclase, microcline and plagioclase feldspars.

$44.00 USD

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Pricing & Details

Auction ID 548109
Watchers 10 watching
Viewed 3,807 times
Starts 4th Sep 2015 10:50pm PDT

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