Comparison · Minerals vs Semi-Precious Stones
Albite vs Moonstone
Albite and Moonstone are easy to confuse. Both sit near Mohs 6–6.5, 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 Albite and Moonstone
- Both sit near Mohs 6–6.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- Hold a thin edge to the light: Albite is Transparent to translucent, Moonstone is translucent.
- They overlap in gray and blue, but Albite also comes in clear and green and Moonstone also comes in white and pink.
- Well-formed crystals give it away: Albite is Triclinic, Moonstone is monoclinic.
Albite vs Moonstone properties
| Property | Albite | Moonstone |
|---|---|---|
| Type | Minerals | Semi-Precious Stones |
| Mohs hardness | 6–6.5 | 6 |
| Luster | Vitreous, pearly on cleavage | vitreous |
| Streak | White | White |
| Transparency | Transparent to translucent | translucent |
| Specific gravity | 2.60–2.65 | 2.6 |
| Crystal system | Triclinic | monoclinic |
| Common colors | White, Colorless, Gray, Greenish, Pale blue (rare) | White, Gray, Peach, Blue sheen |
| Rarity | common | uncommon |
| Typical specimen value | $2–$150+ | $10–$500+ |
Which is more valuable?
Moonstone is usually the more valuable of the two: a typical collector specimen runs about $50 against $20 for Albite, and premium Moonstone can reach $500 or more.
About Albite
Albite is the sodium-rich end-member of the plagioclase feldspar series, with the formula NaAlSi3O8, forming a continuous solid-solution series with the calcium end-member anorthite. It typically appears as white, cream, or pale gray tabular crystals with two cleavage directions meeting near a right angle. Its low density and glassy luster set it apart from denser silicates, and it is a defining component of many granites, gneisses, and pegmatites.
About Moonstone
Moonstone is a feldspar mineral known for its adularescence—a billowy blue-white light that moves across the surface like moonlight on water.
Albite vs Moonstone FAQ
Is Albite the same as Moonstone?
No. Albite is a mineral while Moonstone is a semi-precious stone. Both sit near Mohs 6–6.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Albite from Moonstone?
Both sit near Mohs 6–6.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Hold a thin edge to the light: Albite is Transparent to translucent, Moonstone is translucent. They overlap in gray and blue, but Albite also comes in clear and green and Moonstone also comes in white and pink.
Which is harder, Albite or Moonstone?
They are about equally hard, both near Mohs 6–6.5.
Which is more valuable, Albite or Moonstone?
Moonstone is usually the more valuable of the two: a typical collector specimen runs about $50 against $20 for Albite, and premium Moonstone can reach $500 or more.
