Crystals
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Large aquamarine crystal with etch figures at both ends. The hydrofluoric acid causing these figures also etched an included, large tourmaline crystal out of the aquamarine. The result is a surface-reaching "negative crystal", a cavity in the shape of the tourmaline crystal which even shows the tourmalines typical striations!
cut: natural crystal
origin: Pakistan, Gilgit, Hunza Valley
treatment: Untreated
clarity: very distinct inclusions
Rare blue spinel, rough weight 5.13cts, not facettable
cut: natural crystal
origin: Sri Lanka
treatment: Untreated
clarity: very, very distinct inclusions
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