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Measurements:
110 x 80 x 80 mm Description: A lovely specimen consisting of hyalite opal and feldspar sitting on schorl and smoky quartz crystals. The specimen fluoresces well under ultraviolet light. It has a few contact / pressure
marks and nicks. Chemical
Composition: SiO2•1.5(H2O) (opal) Hardness on Mohs Scale: (opal) 5.5-6 Location: Specimen
Code: NAM
001 R 400 . . .
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