Image: Tsumeb dioptase

Description: Dioptase Specimen, Museum Quality, Tsumeb It's unusual to see dioptase so gemmy, such a large mass on matrix and such unusual deep color. This is one of my favorite minerals and to see this specimen up close was a thrill. This is about 4" long and worth hundreds of dollars. Best view is large, of course.
Title: Tsumeb dioptase
Credit: https://www.Flickr.com/photos/cobalt/2178961787/in/set-72157594519124357/
Author: cobalt123 at Flickr
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