Diamond Price Calculator

The total is carat weight multiplied by the price per carat, rounded to the nearest cent. A 2 carat stone quoted at $6500 per carat comes to $13,000.00.

Larger rough is far rarer, so the price per carat steps up at magic weights like 1.00 and 2.00 carats. A single 2 carat stone usually costs much more than two matched 1 carat stones of the same grade, which this simple multiply does not capture.

The 4Cs: carat, cut, color and clarity. Two stones of identical weight can carry very different per-carat rates once cut grade, body color and inclusions are graded, so use a rate that matches your exact specs.

No. This is the loose stone estimate only. Add the mounting, jeweler labor, lab certification and any sales tax separately to reach a final retail price.

Yes. The arithmetic is identical, so just enter the per-carat price for the lab grown stone. Those rates are typically well below a natural diamond of matching specs.

The total is formatted in US dollars, but the math is currency neutral. If your quote is in another currency, the number is still correct, only the dollar sign label differs.

Carat weight is echoed to four decimal places, matching how stones are weighed to the point, and both the per-carat price and the total are rounded to two decimals for cents.

Both carat weight and price per carat must be positive numbers. If either is empty, zero or negative, the tool asks for valid figures instead of showing a total.

Yes. The calculation happens entirely on your device in the browser, so the carat weight and price you type are never uploaded or stored on a server.