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master checks dioptase crystal with magnifier
druse of dioptase mineral isolated on white
master in magnifying glasses inspects dioptase
cluster of dioptase mineral isolated on white
matrix of dioptase mineral isolated on white
hand in white glove holds dioptase crystal
fingers in white glove holds dioptase crystal
various samples of raw dioptase minerals isolated
sample of raw dioptase mineral on black granite
master in head-mounted lens inspects dioptase
master in white glove holds dioptase crystal
master in head-mounted lens checks dioptase
sample of raw dioptase mineral on white marble
rough emerald-green Dioptase crystals isolated
