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4.36 ct. Kurnakovite

Color:   Colorless Clarity:  Eye Clean to Slightly Included
Origin:  Kern Co., California Cut:  Emerald Radiant
Treatments:  None Measurements:  13.5 x9mm

Kurnakovite is a boron mineral and quite unusual as a gem material.  It is soft (3 on the Moh's scale) and should be kept in a low humidity environment.  Nearly all of these come from deposits in California - this one is very well cut and bright.  Difficult to find this nice.

$110 / carat - $479 total