Purple Flame Pocket - This particular specimen was discovered during grading of a parking lot. The crystals were mined during the course  of a few days before being paved over and lost, forever. Only 70 total crystals were collected and all are now in the hands of private collectors. These are three of the finest examples.

Origin: Concord, North Carolina, USA
Dimensions: 2.5 x  2 x  6 in.