Comparison · Minerals
Diopside vs Jade
Diopside and Jade are easy to confuse because both are minerals. Diopside is harder (Mohs 5.5–6.5) than Jade (Mohs 5), so Diopside will scratch Jade and not the other way round. A steel knife blade (Mohs 5.5) scratches it; a copper coin does not. Below is a side-by-side comparison of their properties and the quick tests that separate them.
Key differences between Diopside and Jade
- Diopside is harder (Mohs 5.5–6.5) than Jade (Mohs 5), so Diopside will scratch Jade and not the other way round. A steel knife blade (Mohs 5.5) scratches it; a copper coin does not.
- Streak color differs: Diopside leaves a white streak on unglazed porcelain, Jade leaves white to light-colored.
- Diopside feels noticeably heavier for its size (specific gravity 3.2–3.3 versus 2.7 for Jade).
- Hold a thin edge to the light: Diopside is Transparent to translucent, Jade is opaque.
- They overlap in multicolored, but Diopside also comes in green, white, gray, blue, purple, and black.
Diopside vs Jade properties
| Property | Diopside | Jade |
|---|---|---|
| Type | Minerals | Minerals |
| Mohs hardness | 5.5–6.5 | 5 |
| Luster | Vitreous | vitreous |
| Streak | White | White to light-colored |
| Transparency | Transparent to translucent | opaque |
| Specific gravity | 3.2–3.3 | 2.7 |
| Crystal system | Monoclinic | varies |
| Common colors | Light to dark green, White, Gray, Blue-violet (violane), Black (chromian varieties) | Various |
| Rarity | common | common |
| Typical specimen value | $2–$150+ | $2–$150+ |
Which is more valuable?
Typical specimens of Diopside and Jade trade in a similar range, around $20.
About Diopside
Diopside is a calcium magnesium silicate pyroxene mineral, CaMgSi2O6, common in metamorphosed limestones and mafic to ultramafic igneous rocks. It typically forms stubby prismatic crystals with a nearly square cross-section, a hallmark of the pyroxene group's characteristic cleavage angles. Diopside's color ranges from colorless to deep green depending on iron and chromium content, and chromium-rich varieties are prized as gem material.
About Jade
Jade is ornamental stone.
Diopside vs Jade FAQ
Is Diopside the same as Jade?
No. Both are minerals, but they are distinct species with different hardness, streak or luster. Diopside is harder (Mohs 5.5–6.5) than Jade (Mohs 5), so Diopside will scratch Jade and not the other way round. A steel knife blade (Mohs 5.5) scratches it; a copper coin does not.
How can you tell Diopside from Jade?
Diopside is harder (Mohs 5.5–6.5) than Jade (Mohs 5), so Diopside will scratch Jade and not the other way round. A steel knife blade (Mohs 5.5) scratches it; a copper coin does not. Streak color differs: Diopside leaves a white streak on unglazed porcelain, Jade leaves white to light-colored. Diopside feels noticeably heavier for its size (specific gravity 3.2–3.3 versus 2.7 for Jade).
Which is harder, Diopside or Jade?
Diopside is harder: Mohs 5.5–6.5 against Mohs 5 for Jade.
Which is more valuable, Diopside or Jade?
Typical specimens of Diopside and Jade trade in a similar range, around $20.
