Updated as of June 2026
Tanzanite vs Amethyst
| Tanzanite | Amethyst | |
|---|---|---|
| Price / carat | $100 to $1,200 | $5 to $60 |
| Hardness (Mohs) | 6.5 | 7 |
| Color | Blue, Violet-blue, Purple | Purple, Violet, Lavender |
| Treatment | Heat treatment (nearly all stones) | Heat treatment (to alter or deepen color) |
The bottom line
Tanzanite and Amethyst both make beautiful jewelry. Choose by the look you want first, then weigh hardness against how hard you will wear the piece, and let price settle close calls. Read the full guides for Tanzanite and Amethyst.
Frequently asked questions
Is Tanzanite or Amethyst more durable?
Amethyst is harder (Mohs 7 vs 6.5), so it resists scratches better.
Which is cheaper, Tanzanite or Amethyst?
Tanzanite runs about $100 to $1,200 per carat and Amethyst about $5 to $60 per carat, so Amethyst is usually the more affordable choice.
Which should I choose?
Pick Tanzanite if you want blue tones and Amethyst if you prefer purple. Match the stone hardness to how you will wear it and let budget break the tie.