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But unfortunately
This gorgeous Pietersite slab is from China
Weight: 1066g
the red UV reactivity may fade to a blue color
Thomsonite Specimen, India ankh But unfortunatelyThomsonite, named after prominent chemist Thomas Thomson, is a well named mineral belonging to the zeolite group. Primarily composed of hydrated calcium silicate, it may have minor amounts of sodium and traces of potassium, but lacks barium, strontium, iron, and magnesium. Structurally, it is similar to sodium calcium zeolite mesolite and sodium zeolite natrolite, but does not form a continuous chemical series with either. It can be found in a range
