Kobyashevite w/ Selenite Cluster

Vibrant teal blue Kobyashevite crystal clusters from Durango, Mexico. You have to check out the detail on these beauties! 

NOTE: There is a lot of discussion on these on whether they are natural or not, and no definitive answers. These are considered a 'post mining' crystal because after the calcite (base crystal) is taken from the ground, somehow copper, gypsum (the clear sparkles or 'fur') and other minerals combine or form to cause the fuzzy blue/gree appearance. Some people say this happens on its own, and some have suggested that miners may have figured out how to help the process along using post-mining runoff. We still think they are beautiful either way but assume that they are not completely natural.

Locality: Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico
Dimension: 3in x 2in x 3in
Wight:223g