Rapaport Trade launches free calculator for matched diamond sets
Rapaport Trade’s free calculator gives jewelers instant matched-set pricing estimates, cutting the manual guesswork behind eternity bands, tennis bracelets and necklaces.
Rapaport Trade has launched a free Matched Diamond Set Calculator that gives jewelers instant estimates for eternity rings, tennis bracelets and necklaces, with live previews and a detailed summary of recommended stone count, safe order range, total carat weight and layout specs. Published June 24, 2026, the tool is aimed at retail jewelers and jewelry designers who need a fast way to price matched sets before they commit to CAD work or call a supplier.
The calculator is built for the kind of early-stage decisions that usually slow down sales. For eternity rings, it asks for U.S. ring size, diamond shape, stone dimensions, orientation, coverage, setting style and spacing preference. The bracelet and necklace tabs adapt those inputs for longer pieces, and the necklace version includes standard lengths from 13 inches to 18 inches, plus a custom-length option. The calculator updates in real time and flags limitations when fancy shapes or complex settings make the math less tidy.
Matched diamond jewelry is margin-sensitive work. A single misread on stone count or total carat weight can change the economics of an eternity band or tennis bracelet before the first stone is ordered. By putting a live estimate in front of a buyer or designer, the calculator tightens the gap between a concept sketch and a quote, reducing the back-and-forth that has traditionally involved manual calculations, supplier calls and waiting for CAD.
The company already offers a diamond price calculator, Price List, TradeScreen and other tools tied to its natural-diamond marketplace. Rapaport says its Price List is the international benchmark used by dealers in major markets and is updated weekly on Thursdays at 11:59 p.m. EST. More than 20,000 professionals in 100-plus countries use its tools daily, and Rapaport Trade’s marketplace lists more than 1.6 million diamonds from verified sellers.
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