Comparison · Quartz Family
Amethyst vs Clear Quartz
Amethyst and Clear Quartz are easy to confuse because both are quartz family. Both sit near Mohs 7, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Below is a side-by-side comparison of their properties and the quick tests that separate them.
Key differences between Amethyst and Clear Quartz
- Both sit near Mohs 7, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
Amethyst vs Clear Quartz properties
| Property | Amethyst | Clear Quartz |
|---|---|---|
| Type | Quartz Family | Quartz Family |
| Mohs hardness | 7 | 7 |
| Luster | vitreous | vitreous |
| Streak | White | White |
| Transparency | transparent | transparent |
| Specific gravity | 2.65 | 2.65 |
| Crystal system | hexagonal | hexagonal |
| Common colors | Purple, Violet, Deep Purple, Lavender | Colorless, White |
| Rarity | common | common |
| Typical specimen value | $10–$500+ | $5–$200+ |
Which is more valuable?
Amethyst is usually the more valuable of the two: a typical collector specimen runs about $50 against $25 for Clear Quartz, and premium Amethyst can reach $500 or more.
About Amethyst
Amethyst is a purple variety of quartz and is the traditional birthstone for February. It's prized for its beautiful purple color ranging from light lavender to deep violet.
About Clear Quartz
Clear quartz, also known as rock crystal, is the purest form of quartz. It's been used for jewelry, carvings, and spiritual purposes throughout history.
Amethyst vs Clear Quartz FAQ
Is Amethyst the same as Clear Quartz?
No. Both are quartz family, but they are distinct species with different hardness, streak or luster. Both sit near Mohs 7, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Amethyst from Clear Quartz?
Both sit near Mohs 7, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
Which is harder, Amethyst or Clear Quartz?
They are about equally hard, both near Mohs 7.
Which is more valuable, Amethyst or Clear Quartz?
Amethyst is usually the more valuable of the two: a typical collector specimen runs about $50 against $25 for Clear Quartz, and premium Amethyst can reach $500 or more.
