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this "Grape Jelly" fluorite slab showcases the rich purple coloration that has made Illinois fluorite famous among collectors
these specimens are generally considered safe to handle because the radioactivity is trapped within the silica structure
25" and weighs 29
picture jasper forms as mineral rich sediments create distinctive bands
Hackmanite | Afghanistan sodalite this "Grape Jelly" fluorite slabHackmanite 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 (1 of 5 for store purposes only)
