A superbly-crystallized New Mexico copper, collected rather recently (June of 2001) in Grant County. This was a freak find, though, in an isolated single boulder. No more of this structure had been found before, nor since. It is nearly a complete floater that is virtually all crystal. Fine patina! These are now unavailable on the market and I buy them as they come back around. 3 x 3 x 2.5 cm