|Dimensions (mm)||7.7 x 7.3 x 4.15mm|
|Weight (carats)||2.3 carats|
Demantoid Garnet is a rare and beautiful bright grass green variety of Andradite garnet. It appears to have first been discovered around 1892 in the Bobrovka area of Russia. The Bobrovka is a small tributary of the River Tschussowaja in the Sissersk region on the western side of the Ural Mountains. It was at first thought to be emerald, which is found nearby, and has been erroneously called “Uralian emerald”.
Demantoid garnet can be broadly divided into two petrogenetic groups, namely skarn-hosted and serpentinite-hosted demantoid. Those in the latter group represent the classic localities in the Russian Urals and at Val Malenco, Italy, in addition to sources such as Iran’s Kerman province and the Kaghan Valley area in the Hazara district of Pakistan. The serpentinite formations hosting these demantoids are the result of relatively low-grade hydrothermal/metamorphic alteration of ultramafic parent rocks.
Nine demantoids reportedly from a new deposit in the Khuzdar area in Pakistan’s Baluchistan province were recently examined in GIA’s Carlsbad lab.The material was bought by one of these contributors (VP) from a gem merchant based in Peshawar, Pakistan.
Name: Demantoid Garnet
Shape: Oval Shape
Origin: Baluchistan Pakistan
|Starts||5th Jan 2019 12:53am PST|
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