Diamond Price Calculator
Enter your diamond's specs to estimate its fair market value based on current Rapaport prices.
Frequently Asked Questions
Is the diamond price calculator free?›
Yes — the calculator is completely free. Enter your diamond's specs and get an instant estimated fair market value based on current Rapaport wholesale pricing.
What specs do I need to use the calculator?›
At minimum you need shape, carat weight, color, and clarity. For a more accurate estimate, also enter cut grade, polish, symmetry, and fluorescence. Depth and table percentages are optional but improve accuracy.
How is the price calculated?›
We start with the current Rapaport list price for your diamond's shape, carat weight, color, and clarity. Then our AI applies industry-standard deductions for cut quality, polish, symmetry, fluorescence, and proportions — the same methodology used by professional diamond dealers.
What's the difference between this and the GIA Certificate Check?›
The GIA Certificate Check looks up a specific diamond by its GIA report number and pulls the exact specs from GIA's database. The calculator lets you enter specs manually — useful if you don't have a GIA number or want to compare hypothetical diamonds.
Does this work for lab-grown diamonds?›
The calculator uses Rapaport benchmark pricing, which only covers natural diamonds. Lab-grown diamond pricing doesn't have a standardized benchmark, so estimates wouldn't be reliable.