A market-wide average across qualities and sizes. Your stone's value depends on carat, color, clarity, cut, treatment, and origin.
Prasiolite, also known as green amethyst, is a green variety of quartz. Natural prasiolite is rare; most on the market is produced by heat-treating or irradiating amethyst or other quartz to induce a green color. Colors range from pale yellow-green to medium, sometimes slightly grayish, green. With Mohs hardness 7 and good toughness, it is suitable for most jewelry applications.
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 prasiolite is $15 per carat as of 2026-08-17. 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 prasiolite index moved +0.0%. Gem prices move on supply, demand, and metal markets; treat any single stone as a collectible first and an asset second.