Diamond Market Price Trend
The live GemstoneAI index for diamond. For prices by quality and size, see the diamond price guide.
A market-wide average across qualities and sizes. Your stone's value depends on carat, color, clarity, cut, treatment, and origin.
What is moving diamond prices
- Metal Prices: pushing prices up
- News & Events: weighing on prices
About diamond
Diamonds are renowned for their exceptional hardness and brilliance, formed deep within the Earth's mantle under high pressure and temperature. They are typically colorless but can exhibit a range of hues, with popular cuts including round, princess, and emerald.
Where diamond comes from
- Russia (~30% of supply)
- Botswana (~22% of supply)
- Canada (~16% of supply)
- Angola (~12% of supply)
What is your diamond 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.
Featured in National Jeweler
What diamond jewelry is worth
The middle first-read value from GemstoneAI scans of each kind of diamond jewelry. All jewelry values from real scans.
- Gold diamond ring: $1,500, from 442 scans
- Gold diamond necklace: $930, from 54 scans
- Gold diamond earrings: $700, from 47 scans
- Gold diamond bracelet: $2,400, from 45 scans
- Silver diamond ring: $360, from 29 scans
- Platinum diamond ring: $4,200, from 13 scans
What is the diamond market index?
The GemstoneAI market index for diamond is $4,490 per carat as of 2026-11-09. 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 diamond is real?
Visual tests alone are unreliable. GemstoneAI identifies the stone from a photo, shows what else it could be, and estimates market value. It is free to try.
Is diamond a good investment?
Over the past 30 days the diamond index moved -3.1%. Gem prices move on supply, demand, and metal markets; treat any single stone as a collectible first and an asset second.