Hackmanite | Afghanistan Iceland Spar Calcite and natural faceting

and natural faceting

Stromatolites are layered colonial sedimentary structures predominantly formed by photosynthetic microorganisms

but other important localities include Burma

They are the oldest living fossil

Hackmanite | Afghanistan Iceland Spar Calcite and natural facetingHackmanite 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 (5 of 5 for store purposes only)