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Moonstone

A ghostly sheen moves under the surface of this feldspar, like moonlight glowing in water.

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A Cabochon

The cabochon cut helps moonstone to best display its phenomenon.

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Phenomenal Beauty

Adularescence is the light that appears to billow across a gemstone.

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Transparency

Fine moonstone is colorless and semitransparent to transparent.

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Feldspar

Moonstone is formed of two feldspar minerals, orthoclase and albite.

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Beautiful Light

Moonstone’s shimmer of light is apparent even in its rough form.

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Twinned Crystal

This twinned moonstone shows good crystal form with flat faces.

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Tools

Buyer's Guide

The strength and color of moonstone's sheen, its bodycolor, and clarity are the most important value factors.

FIND A JEWELER

Submit your gemstone through your local jeweler. 

FIND A REPORT

Verify the information on your report matches what is archived in the GIA report database.

What To Look For

Moonstone Color

Moonstone that’s colorless with blue sheen is most valuable but moonstone is available in green, peach, brown, and gray with blue, silver, white or rainbow adularescence.

Moonstone Clarity
Moonstone that is almost transparent and as free of inclusions as possible is generally preferred. A slight translucency helps to accentuate the adularescence.
Moonstone Cut

Most moonstone is cut in the smooth domed shape called a cabochon to best show the adularescence. Faceted moonstone is becoming more popular.

Moonstone Carat Weight
Moonstone is available in a wide range of sizes but fine material is rare in large sizes and its value increases as a result.
Moonstone Quality Factors: The Comprehensive Guide