“8.1 x 6.6 x 1.8 cm
This piece features beautiful sky blue masses of chrysocolla on quartz matrix. The piece came to us labeled as coming from "Rabigh" which has a refinery but no actual mineral localities that I can find, and I can't find a reference to this name in any database or mineral book, so I assume it's from Mahd Adh Dhahab Mine which is actually a gold mine that's been worked over 3,000 years. A really cool reference specimen from the Middle East.
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Brian Kosnar - 8th February 2015