Dims: 3.9x2.7x1.1" (10.0x6.0x2.8cm)
Wt: 6.17 oz. (174.5g)
This hand specimen is hackmanite, a variety of sodalite. It fluoresces a bright yellow under long-wave UV, and turns pink to almost cherry red! Then, time or exposure to bright lights returns it to the original translucent white. The specimen has been broken from a larger piece, and shows crystal tendencies in cleavage or fracture planes. Hackmannite is a definite must-have for fluorescent mineral collectors.