A market-wide average across qualities and sizes. Your stone's value depends on carat, color, clarity, cut, treatment, and origin.
Idocrase, more commonly known as vesuvianite, is a complex calcium aluminum silicate that forms in skarns and contact metamorphic rocks. Gem-quality material occurs in green, yellow-green, brown, and less commonly purple or colorless hues. With Mohs hardness around 6.5 and good toughness, it is reasonably durable when free of fractures and is typically cut into cabochons or faceted stones for collectors and designers.
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 vesuvianite is $77 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 vesuvianite index moved +0.4%. Gem prices move on supply, demand, and metal markets; treat any single stone as a collectible first and an asset second.