Hackmanite | Afghanistan congo though it forms in a

though it forms in a different crystal structure

This item is 10" x 8

This item is 1" x 0

This item is 2" x 1" and weighs 2

Hackmanite is a fluorescent

Hackmanite | Afghanistan congo though it forms in aHackmanite is a fluorescent, phosphorescent and also tenebrescent (reversible photochromism) mineral found in Afghanistan. It can be deep pink, blue, or purple but quickly fades to colorless when exposed to sunlight. The original color can be restored quickly by exposure to short wave ultraviolet light, or more slowly by storing it in a dark space. This item comes in a perky box with 3 pieces included and weighs 0. 3 oz (3 of 5 for store purposes only)