Comparison · Minerals
Azurite vs Chrysocolla
Azurite and Chrysocolla are easy to confuse because both are minerals. Azurite is harder (Mohs 3.5) than Chrysocolla (Mohs 2.5), so Azurite will scratch Chrysocolla and not the other way round. A copper coin (Mohs 3.5) scratches it, but a fingernail does not. Below is a side-by-side comparison of their properties and the quick tests that separate them.
Key differences between Azurite and Chrysocolla
- Azurite is harder (Mohs 3.5) than Chrysocolla (Mohs 2.5), so Azurite will scratch Chrysocolla and not the other way round. A copper coin (Mohs 3.5) scratches it, but a fingernail does not.
- Streak color differs: Azurite leaves a light blue streak on unglazed porcelain, Chrysocolla leaves white to pale blue.
- Azurite feels noticeably heavier for its size (specific gravity 3.8 versus 2.2 for Chrysocolla).
- They overlap in blue, but Chrysocolla also comes in green.
- Well-formed crystals give it away: Azurite is monoclinic, Chrysocolla is orthorhombic.
Azurite vs Chrysocolla properties
| Property | Azurite | Chrysocolla |
|---|---|---|
| Type | Minerals | Minerals |
| Mohs hardness | 3.5 | 2.5 |
| Luster | vitreous | vitreous |
| Streak | Light blue | White to pale blue |
| Transparency | translucent | translucent |
| Specific gravity | 3.8 | 2.2 |
| Crystal system | monoclinic | orthorhombic |
| Common colors | Deep Blue, Azure Blue | Blue-Green, Cyan, Turquoise Blue |
| Rarity | uncommon | common |
| Typical specimen value | $10–$500+ | $5–$150+ |
Which is more valuable?
Azurite is usually the more valuable of the two: a typical collector specimen runs about $50 against $25 for Chrysocolla, and premium Azurite can reach $500 or more.
About Azurite
Azurite is a deep blue copper carbonate mineral, often found with green malachite. It was ground into pigment for the famous blue in Renaissance paintings.
About Chrysocolla
Chrysocolla is a vibrant blue-green copper mineral often confused with turquoise. When mixed with quartz, it's hard enough for jewelry.
Azurite vs Chrysocolla FAQ
Is Azurite the same as Chrysocolla?
No. Both are minerals, but they are distinct species with different hardness, streak or luster. Azurite is harder (Mohs 3.5) than Chrysocolla (Mohs 2.5), so Azurite will scratch Chrysocolla and not the other way round. A copper coin (Mohs 3.5) scratches it, but a fingernail does not.
How can you tell Azurite from Chrysocolla?
Azurite is harder (Mohs 3.5) than Chrysocolla (Mohs 2.5), so Azurite will scratch Chrysocolla and not the other way round. A copper coin (Mohs 3.5) scratches it, but a fingernail does not. Streak color differs: Azurite leaves a light blue streak on unglazed porcelain, Chrysocolla leaves white to pale blue. Azurite feels noticeably heavier for its size (specific gravity 3.8 versus 2.2 for Chrysocolla).
Which is harder, Azurite or Chrysocolla?
Azurite is harder: Mohs 3.5 against Mohs 2.5 for Chrysocolla.
Which is more valuable, Azurite or Chrysocolla?
Azurite is usually the more valuable of the two: a typical collector specimen runs about $50 against $25 for Chrysocolla, and premium Azurite can reach $500 or more.
