Wednesday, May 1, 2013

Gemstone of the Week: Jeremejevite

(Jeremejevite image found on gemparcel.com)


Jeremejevite is a very beautiful and rather rare gemstone.  It is an aluminum borate based mineral, and is often considered to be one of the world's rarest gemstones.  Jeremejevite was first discovered in 1883 by a Russian mineralogist and engineer named Pavel Vladimirovitch Jeremejev.  Jeremejevite is about a hardness 6.5-7.5 and is a transparent gemstone with a vitreous luster.  Its colour may be light yellow brown, pale to a deep cornflower blue, or colourless. It transmitted light it tends to appear colourless or pale blue. Jeremejevite generally forms as well-sized crystals or as slender prismatic crystals.  It may be found in Burma(Myanmar), Germany, Madagascar, Namibia, Russia, and Tajikistan. As can be expected due to its rarity, Jeremejevite tends to be quite valuable.  One site I checked listed the current market value of Jeremejevite, as of 2012, to be about $2,000 per carat.

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