AltGems
Updated as of June 2026

Tanzanite buying guide

Use this checklist to choose a tanzanite you will be happy with, then compare prices across a couple of trusted sellers.

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The Tanzanite buying checklist

FactorWhat to look for
ColorEven, saturated tone in blue or violet-blue or purple. Color drives value most.
CutSymmetry and life. A good cut makes a stone look larger and brighter.
ClarityEye-clean is the practical target for most buyers.
TreatmentHeat treatment (nearly all stones). Ask the seller to disclose.
Budget$100 to $1,200 per carat is the typical range.
MetalPairs well with white gold, platinum.

Best metals for Tanzanite

Tanzanite looks best set in white gold, platinum. See our metal guides to compare durability and cost.

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7.8

Sapphire

Blue · Mohs 9
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Amethyst

Purple · Mohs 7
6.8

Aquamarine

Blue · Mohs 7.75

Frequently asked questions

What should I look for when buying Tanzanite?
Prioritize color and cut, confirm any treatment, set a carat target for your budget, and pick a metal that suits the stone. Tanzanite pairs well with white gold, platinum.
Where is the best place to buy Tanzanite?
For fine pieces, established jewelers with return policies and lab reports are safest. For unique or budget pieces, vetted marketplace sellers work well. Always check reviews and the return window.
Should I choose natural or lab-created Tanzanite?
Natural Tanzanite carries origin appeal, while lab-created alternatives can cost less for similar looks. Choose based on budget and what matters to you.