Buying a loose tanzanite and having it set
Every setting operation puts pressure on a stone with a plane it can split along. Buying loose and commissioning means setting it once.
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Cutting, setting and finishing: how a rough crystal becomes a finished gem.
How a tanzanite is cut and set
The most consequential decision is made before any facet is cut, takes a minute, and cannot be undone: which of three colours will face the sky.
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