A market-wide average across qualities and sizes. Your stone's value depends on carat, color, clarity, cut, treatment, and origin.
Jasper is an opaque, fine-grained variety of chalcedony (microcrystalline quartz) characterized by rich colors and diverse patterns derived from iron oxides, clays and other inclusions. It appears in red, brown, yellow, green, blue and multicolored combinations, often forming scenic, orbicular, banded or brecciated patterns. With Mohs hardness around 6.5–7 and good toughness, it is widely used as a cabochon and carving material.
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 jasper is $5.12 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 jasper index moved +2.4%. Gem prices move on supply, demand, and metal markets; treat any single stone as a collectible first and an asset second.