What diamonds actually cost, tracked monthly.
Real price per carat for lab and natural diamonds, by shape, colour and clarity, built on millions of retailer listings instead of wholesale rumor. We sell nothing, so the index reflects what retailers actually ask, not what anyone wants you to pay. Updated every month.
Ask Lucy where prices are heading| Carat | Natural / ct | Lab grown / ct |
|---|---|---|
| 1.0ct | $5,679 | $481 |
| 1.5ct | $7,077 | $353 |
| 2.0ct | $11,584 | $430 |
Built from real cross-retailer listings, not wholesale rumor. We sell nothing and take no commission.
See the full price index →LucyDiamond analystFreeI read the market data in seconds. Ask me how lab compares to natural at your carat, or which way prices are heading.
Built on real listings
Not surveys, not wholesale price sheets. The index reflects what diamonds actually sell for online, across 100+ retailers.
Lab versus natural
Natural diamonds run several times the price of lab grown per carat, and the gap keeps moving. Watch it by carat and grade so you buy on the right side of it.
Per carat, not a blur
Drill into the exact segment you are shopping instead of a single blended average that hides the truth.
How it works
Pick a segment
Origin, shape, carat band, colour and clarity.
Read the price per carat
Plus how it has moved, so you can see the trend at a glance.
Buy at the right time
Move when the data is in your favour, not on a hunch.
Common questions
Where does the data come from?
From millions of retailer listings across more than 100 retailers, released monthly. Not surveys or wholesale sheets.
How often is it updated?
The index refreshes monthly. The listings under it are re-read daily at most retailers, and each carries the date we last saw it.
Is it free?
Yes, free to view with no sign up.
See where diamond prices are heading
Open the price indexFree to use, no sign up to search. Register free to see who sells it cheapest.