Updated as of June 2026
Smoky Quartz vs Amethyst
| Smoky Quartz | Amethyst | |
|---|---|---|
| Price / carat | $3 to $50 | $5 to $60 |
| Hardness (Mohs) | 7 | 7 |
| Color | Brown, Gray, Smoky, Black | Purple, Violet, Lavender |
| Treatment | Irradiation (some stones) | Heat treatment (to alter or deepen color) |
The bottom line
Smoky Quartz 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 Smoky Quartz and Amethyst.
Frequently asked questions
Is Smoky Quartz or Amethyst more durable?
Both rate Mohs 7, so they are comparably durable.
Which is cheaper, Smoky Quartz or Amethyst?
Smoky Quartz runs about $3 to $50 per carat and Amethyst about $5 to $60 per carat, so Smoky Quartz is usually the more affordable choice.
Which should I choose?
Pick Smoky Quartz if you want brown tones and Amethyst if you prefer purple. Match the stone hardness to how you will wear it and let budget break the tie.