This cabochon of Shattuckite has gorgeous patterns. Shattuckite is a relatively rare copper silicate mineral. It was first discovered in the copper mines of Bisbee, Arizona, specifically the Shattuck Mine (hence the name). It is a secondary mineral that forms from the alteration of other secondary minerals.
I have all wrapped up in raw copper wire that I oxidized in liver of sulpher and hand polished with renaissance wax. 
Measures 1" by 2"
Includes an 18" copper chain
Gift boxed