A market-wide average across qualities and sizes. Your stone's value depends on carat, color, clarity, cut, treatment, and origin.
Moonstone is a feldspar gemstone, typically orthoclase or a combination of orthoclase and albite, known for adularescence—a soft, billowy sheen of light that seems to float under the surface. Body colors range from colorless and white to gray, peach and brown. With Mohs hardness around 6–6.5 and two directions of cleavage, it requires some care but is widely used in jewelry.
Market averages will not price your stone. GemstoneAI identifies gems and jewelry from a photo, checks authenticity and treatment signals, and gives you a real market valuation in seconds. Free to try.
The GemstoneAI market index for moonstone is $62 per carat as of 2026-08-04. That is a market-wide average across qualities, not a quote for a specific stone. Individual value depends on carat, color, clarity, cut, treatment, and origin.
Visual tests alone are unreliable. GemstoneAI analyzes a photo of your stone for identity, treatment indicators, and authenticity signals, then estimates market value. It is free to try.
Over the past 30 days the moonstone index moved +3.0%. Gem prices move on supply, demand, and metal markets; treat any single stone as a collectible first and an asset second.