A market-wide average across qualities and sizes. Your stone's value depends on carat, color, clarity, cut, treatment, and origin.
Sphene (titanite) is a titanium silicate prized for fire exceeding diamond's and strong trichroism — flashes of green, yellow, and orange from one stone. Hardness 5-5.5 limits it to pendants, earrings, and careful ring wear.
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 sphene is $148 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 sphene index moved -1.3%. Gem prices move on supply, demand, and metal markets; treat any single stone as a collectible first and an asset second.