A woman in a deep violet dress on a marble terrace above the sea, wearing a tanzanite cluster earring and a line bracelet of oval tanzanites.
THE JOURNAL

COLLECTING

Choosing, wearing and caring for tanzanite, and what to ask before you buy.

Collecting 12 min

My tanzanite is damaged. What can be repaired?

Abrasion polishes out. A chip usually means recutting and losing weight. A clean split along the cleavage plane generally means the stone is finished.

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Collecting 11 min

What decides the price of a tanzanite

Colour saturation carries most of the price, size is tangled up in it, and treatment barely moves it. What a quote is really made of, and why this one has none.

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Collecting 11 min

Insuring and valuing a tanzanite

A valuation is a replacement figure, not a grade. For a stone with no grading scale, the description attached to it does more work than the number.

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Collecting 11 min

How to tell if a tanzanite is real

You cannot reliably tell a real tanzanite from a good simulant by looking. What you can safely check, what proves nothing, and what will cost you a gem.

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