How Much Is Moonstone Worth?
Moonstone is cheap as a cloudy white bead and surprisingly pricey as a transparent stone with a floating blue glow. That glow — adularescence — is the whole story.
Moonstone value is almost entirely about its optical effect. A milky, cloudy stone with a faint shimmer is common and inexpensive. A clear, glassy body with a vivid blue light that seems to float across the surface and follow your eye — called adularescence — is scarce and commands real money. Everything else (size, shape) matters far less.
What drives the price: the sheen, then body clarity
Two things lift a moonstone: a strong, electric-blue sheen that stays bright from several angles, and a transparent, colourless body for that sheen to glow against. The most valuable stones — classic “blue moonstone” from Sri Lanka — have both. “Rainbow moonstone” (actually a near-transparent white labradorite) shows blue-to-multicolour flash and sits in the affordable middle. Cloudy white and grey body colours are the cheapest.
Typical fair prices
Cabochon-cut stones, mid-2020s retail, judged on sheen and body clarity.
| Type / grade | Small (<3 ct) | Larger / fine |
|---|---|---|
| White / cloudy | $2–$10/ct | $10–$25/ct |
| Rainbow moonstone | $15–$40/ct | $40–$100/ct+ |
| Blue sheen (good) | $50–$150/ct | $150–$300/ct |
| Fine blue (Sri Lanka) | $150–$300/ct | $300–$500/ct+ |
Watch-outs
- “Opalite” glass sold as moonstone. Opalite is man-made glass with a bluish glow and an orange tint in transmitted light. Real moonstone’s sheen shifts as you tilt it; glass glow looks flat and even.
- Rainbow moonstone isn’t classic moonstone. It’s near-transparent white labradorite. That’s fine and attractive — just don’t pay blue-moonstone prices for it.
- Cloudy stones at clear-stone prices. Transparency is a big value driver. A milky body should cost far less than a glassy one with the same colour of sheen.
- Doublets and coated beads. Some low-cost “moonstone” is assembled or coated. Ask whether the stone is natural and solid.
The International Gem Society explains that a colourless, transparent body with a vivid blue adularescence is the most valuable combination, and that “rainbow moonstone” is labradorite. The GIA’s feldspar quality factors cover moonstone within the feldspar group.
Buy moonstone judged on its sheen
Our sister marketplace describes the body clarity and the colour and strength of the sheen — so you can price the glow, not the size.
Browse moonstone at Minerals Kingdom →FAQ
Why is blue moonstone so much pricier than white?
Clear-bodied stones with a strong, centred blue sheen are scarce, and the best come from Sri Lanka where the classic deposits are largely worked out. The glow is the value — and the blue version is the hardest to find.
Is rainbow moonstone real moonstone?
Mineralogically it’s a transparent white labradorite, not the same feldspar as classic moonstone — but it’s natural and widely sold as “rainbow moonstone.” It’s a good value; just don’t pay fine-blue-moonstone prices for it.
How do I spot fake (opalite) moonstone?
Opalite is glass: hold it to a light and it often glows orange, with a flat, even bluish sheen. Real moonstone shows a sheen that moves and changes as you tilt the stone, and no orange transmission.
More value guides
Sources
International Gem Society (IGS) — moonstone value & identification. Gemological Institute of America (GIA) — feldspar quality factors. Price ranges are Fair Carat’s synthesis of mid-2020s online retail; verify current dealer prices before buying.Independent gem-value research. We don’t sell stones and sellers can’t buy a better verdict.
Informational only — not a formal appraisal. For insurance or resale, get a certified appraisal.