Full ring calculator · US retail
Diamond price calculator and ring cost curves
Set the diamond grades and carat on the curves, then choose the shape, setting, metal and band width. The total and the 3D model update with every change.
Centre stone only, log scale. The bar is typical listing variation for the selected grades and shape; the tick is the average. Tap a row to set the carat weight.
Average stone price at 1 ct
Natural · Round Brilliant · Excellent cut. Tap a cell to set the grades above.
One stone, clean shank. Timeless and the least expensive setting.
Estimated ring total
$7,833
Typical range $6,423 – $9,243
- Centre stone · 1 ct VS2 G–H
- $6,888
- Setting, metal & band
- $950
Informational estimate only — not a final price, quotation, appraisal or guarantee. The CAD render is illustrative, not manufacturing-ready. Verify specifications and pricing with an independent jeweller before purchase or manufacture.
Stone prices are modelled from published US retail ranges, not live listings. Send me your own price list any time and I will swap these numbers for yours. Fluorescence, certification and individual stone quality will move real quotes.
How to read the diamond price curves
The bars show a typical US retail range for the selected natural or lab-grown diamond specifications. Diamond cost rises faster than weight and can jump near popular carat milestones. Shape and grade choices move the curve while the setting and metal are added separately.
Use the range for early budgeting, not as a live quote. Individual certification, proportions, fluorescence and seller inventory can change actual prices. Learn how carat pricing works, compare the clarity grades, or open the full engagement ring designer.