Proustite 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 proustite prices
- Metal Prices: weighing on prices
About proustite
Proustite is a silver arsenic sulfide known as 'ruby silver' for its deep scarlet color and adamantine luster. It is very soft (2-2.5 Mohs), light-sensitive, and darkens on prolonged exposure, making it a collector's cabinet mineral rather than a jewelry stone.
What is your proustite 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 proustite worth?
The GemstoneAI market index for proustite is $144 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 proustite 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 proustite a good investment?
Over the past 30 days the proustite 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.