Prehnite Value & Market Price
A market-wide average across qualities and sizes. Your stone's value depends on carat, color, clarity, cut, treatment, and origin.
What is moving prehnite prices
- Metal Prices: weighing on prices
About prehnite
Prehnite is a calcium aluminum silicate hydroxide that typically forms botryoidal or granular masses and, less commonly, distinct crystals. Gem-quality material is usually translucent to semi-transparent and exhibits soft, apple-green to yellow-green hues, sometimes with a slightly milky or 'jelly' appearance. With Mohs hardness around 6–6.5 and good toughness when free of cracks, it is suited to cabochons and beads, and occasionally faceted stones.
What is your prehnite worth?
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.
How much is prehnite worth?
The GemstoneAI market index for prehnite is $24 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.
How can I tell if my prehnite is real?
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.
Is prehnite a good investment?
Over the past 30 days the prehnite index moved +0.3%. Gem prices move on supply, demand, and metal markets; treat any single stone as a collectible first and an asset second.