💎 Diamond Price Calculator
Turn a diamond quote into a price per carat, or a price per carat into a total, so two quotes can be compared on the same footing. Your quote restated, not a value.
💎 Carat Weight × Price Per Carat
What is a Diamond Price Calculator?
It restates a diamond quote as carat weight × price per carat. Because price per carat is driven by the 4Cs (cut, color, clarity and carat), by whether the stone is mined or laboratory-grown, and by the grading report behind it, the only honest price to put in is the one on your own quote.
Use it to compare two quotes per carat or to check a total. It prices the loose stone only, holds no price list, and is not an appraisal: what a buyer will pay back is usually far below a retail quote, and only a qualified gemologist can confirm what a stone is.
❓ Frequently Asked Questions
How does the calculator work out a diamond's price?
Price = carat weight × price per carat. Enter the weight and your quote, either per carat or as a total: a 1.5 ct stone quoted at $8,000 per carat is $12,000, and a 1.05 ct stone quoted at $5,250 in total is $5,000 per carat. The figures come from your quote; the tool holds no price list.
Why does price per carat differ so much between stones?
Because carat is only one of the 4Cs. GIA puts it this way: "two diamonds of the same carat weight aren't necessarily equal. It is essential to have the color, clarity and cut of a diamond evaluated as well." GIA also notes that "Although it is difficult to visually distinguish a 0.99 carat diamond from a 1.00 carat, the price difference can be significant." Compare price per carat only between stones of similar weight and grades.
Does it matter if the diamond is laboratory-grown?
Very much. A laboratory-grown diamond and a mined diamond of the same grades are priced very differently, so never compare the two on one scale. The US Federal Trade Commission's Jewelry Guides (16 CFR 23.12) expect a laboratory-created diamond to carry a clear disclosure, for example "laboratory-created," "laboratory-grown," or "[manufacturer name]-created", conveying that it is not a mined stone.
Is the result what my diamond is worth?
No. It is the asking price restated. A retail price includes the seller's costs and margin, and what a buyer will pay you back for a diamond is usually far below a retail quote. A grading report (GIA, IGI or another lab) describes the stone's grades; it is not a valuation. For a value, for insurance or for sale, and to confirm what the stone is, see a qualified gemologist or appraiser.