Voting period is over. Please don't add any new votes. Voting period ends on 8 Feb 2013 at 20:05:09 (UTC)

 
Original – Dioptase with calcite and minrecordite from Tsumeb Mine in Namibia, known for particularly high-quality dioptase specimens.
Reason
Relatively rare mineral, so plenty of EV! Sharp, high-res photo.
Articles in which this image appears
Dioptase
FP category for this image
Wikipedia:Featured pictures/Sciences/Geology
Creator
Archaeodontosaurus

Not Promoted --Armbrust The Homunculus 08:13, 5 February 2013 (UTC)[reply]