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Crystals
Crystals are easy to distinguish because they are always angular. Finding a crystal inside a stone usually indicates you are seeing a natural gem. The exceptions are few and easy to learn.
Phenakite crystals show up in flux grown emerald. They are always in low relief and are usually associated with flux veils, which is a primary clue to their identification.
Hexagonal platelets are another item that requires attention. Both hematite and platinum crystallize …
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