A market-wide average across qualities and sizes. Your stone's value depends on carat, color, clarity, cut, treatment, and origin.
Legrandite is a rare zinc arsenate mineral known for its bright yellow to yellow-orange color and typically prismatic or acicular crystal habit. It is prized primarily as a mineral specimen; facetable material is extremely scarce due to the mineral's softness (Mohs hardness ~4.5–5), brittleness and perfect cleavage.
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 legrandite is $575 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 legrandite index moved +0.6%. Gem prices move on supply, demand, and metal markets; treat any single stone as a collectible first and an asset second.