Comparison · Organic Gems vs Silicate Minerals
Pearl vs Serpentine
Pearl and Serpentine are easy to confuse. Both sit near Mohs 3, 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 Pearl and Serpentine
- Both sit near Mohs 3, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- Hold a thin edge to the light: Pearl is opaque, Serpentine is translucent.
- They overlap in white, black, and yellow, but Pearl also comes in pink and Serpentine also comes in green.
- Well-formed crystals give it away: Pearl is orthorhombic, Serpentine is monoclinic.
Pearl vs Serpentine properties
| Property | Pearl | Serpentine |
|---|---|---|
| Type | Organic Gems | Silicate Minerals |
| Mohs hardness | 3 | 3.5 |
| Luster | pearly | greasy |
| Streak | White | White |
| Transparency | opaque | translucent |
| Specific gravity | 2.7 | 2.6 |
| Crystal system | orthorhombic | monoclinic |
| Common colors | White, Cream, Pink, Black, Gold | Green, Yellowish green, Olive, Black, White |
| Rarity | uncommon | common |
| Typical specimen value | $50–$100000+ | $5–$250+ |
Which is more valuable?
Pearl is usually the more valuable of the two: a typical collector specimen runs about $500 against $40 for Serpentine, and premium Pearl can reach $100000 or more.
About Pearl
Pearls are organic gems formed inside mollusks. Natural pearls are extremely rare; most pearls today are cultured by inserting a nucleus into the mollusk.
About Serpentine
Serpentine is a group of green, magnesium-rich silicate minerals that includes antigorite, lizardite, and chrysotile. It commonly occurs as massive, greasy-feeling rock in mottled green tones and is the main component of the rock serpentinite.
Pearl vs Serpentine FAQ
Is Pearl the same as Serpentine?
No. Pearl is a organic gem while Serpentine is a silicate mineral. Both sit near Mohs 3, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Pearl from Serpentine?
Both sit near Mohs 3, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Hold a thin edge to the light: Pearl is opaque, Serpentine is translucent. They overlap in white, black, and yellow, but Pearl also comes in pink and Serpentine also comes in green.
Which is harder, Pearl or Serpentine?
Serpentine is harder: Mohs 3.5 against Mohs 3 for Pearl.
Which is more valuable, Pearl or Serpentine?
Pearl is usually the more valuable of the two: a typical collector specimen runs about $500 against $40 for Serpentine, and premium Pearl can reach $100000 or more.
