Comparison · Semi-Precious Stones vs Silicate Minerals
Kunzite vs Spodumene
Kunzite and Spodumene are easy to confuse. 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 Kunzite and Spodumene
- Both sit near Mohs 7, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- They overlap in pink and purple, but Spodumene also comes in green, yellow, and clear.
Kunzite vs Spodumene properties
| Property | Kunzite | Spodumene |
|---|---|---|
| Type | Semi-Precious Stones | Silicate Minerals |
| Mohs hardness | 7 | 6.75 |
| Luster | vitreous | vitreous |
| Streak | White | White |
| Transparency | transparent | transparent |
| Specific gravity | 3.2 | 3.15 |
| Crystal system | monoclinic | monoclinic |
| Common colors | Pink, Lilac, Violet | Pink, Lilac, Green, Yellow, Colorless |
| Rarity | uncommon | uncommon |
| Typical specimen value | $30–$1500+ | $10–$800+ |
Which is more valuable?
Kunzite is usually the more valuable of the two: a typical collector specimen runs about $150 against $110 for Spodumene, and premium Kunzite can reach $1500 or more.
About Kunzite
Kunzite is the pink to violet variety of spodumene. It was discovered in 1902 and named after gemologist George Frederick Kunz.
About Spodumene
Spodumene is a lithium aluminum pyroxene found in granite pegmatites. It forms flattened prismatic crystals with perfect prismatic cleavage, and its transparent gem varieties include pink-lilac kunzite and green hiddenite.
Kunzite vs Spodumene FAQ
Is Kunzite the same as Spodumene?
No. Kunzite is a semi-precious stone while Spodumene is a silicate mineral. 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 Kunzite from Spodumene?
Both sit near Mohs 7, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. They overlap in pink and purple, but Spodumene also comes in green, yellow, and clear.
Which is harder, Kunzite or Spodumene?
They are about equally hard, both near Mohs 7.
Which is more valuable, Kunzite or Spodumene?
Kunzite is usually the more valuable of the two: a typical collector specimen runs about $150 against $110 for Spodumene, and premium Kunzite can reach $1500 or more.
