How accurate are these estimates?

Prices are based on broad market averages for GIA-certified round brilliant diamonds. Actual retail prices vary significantly by jeweler, lab certification, fluorescence, polish, symmetry, and current market conditions. Use this as an educational starting point, not a quote.

Why does price scale non-linearly with carat weight?

Larger rough diamonds are rarer, so the price per carat increases as carat weight rises. A 2-carat diamond is not simply double the price of a 1-carat stone of the same quality — it can be 2–4x more expensive per carat.

What is the difference between VS1 and VS2 clarity?

Both VS1 and VS2 grades contain very small inclusions that are difficult to see under 10x magnification. VS1 inclusions are slightly smaller or fewer than VS2. Both are considered eye-clean in most cases.

Does this tool cover fancy-shaped diamonds?

No. This tool is calibrated for round brilliant cut diamonds, which command the highest prices and are the most standardized. Fancy shapes (oval, princess, pear, etc.) typically trade at a 10–25% discount to round brilliants of comparable grades.

What does "eye-clean" mean?

Eye-clean means no inclusions are visible to the naked eye (unaided, from about 10 inches). VS2 and most SI1 diamonds are eye-clean. SI2 and I-grade diamonds may show visible inclusions.

Diamond Price Estimator

Estimate a round brilliant diamond's retail price range based on carat weight, cut, color, and clarity.

Diamond Grades

Carat Weight

Cut Grade

Color Grade

Clarity Grade

Select grades above and click Estimate Price

4C Grade Reference

Cut

Ideal / ExcellentMaximum brilliance

Very GoodNear-ideal light return

GoodSome light leakage

Fair / PoorSignificant leakage

Color

D–FColorless

G–HNear colorless

I–JFaint yellow tint

K–MVisible yellow tint

Clarity

FL / IFNo inclusions

VVS1 / VVS2Minute inclusions

VS1 / VS2Very small inclusions

SI1 / SI2Small inclusions

I1 / I2 / I3Visible inclusions

Carat Weight Tiers

< 0.50 ctMelee / accent

0.50–0.99 ctHalf carat range

1.00–1.49 ctOne carat range

1.50–1.99 ctPremium tier

2.00+ ctLuxury tier

Summary

Estimate a round brilliant diamond's retail price range based on carat weight, cut, color, and clarity.

How it works

Select a carat weight between 0.25 and 10.00 carats.
Choose a cut grade from Ideal/Excellent down to Fair/Poor.
Select a color grade ranging from colorless (D–F) to very light yellow (K–M).
Pick a clarity grade from Flawless/Internally Flawless down to I1/I2/I3.
The estimator applies base price per carat, color multiplier, cut multiplier, and a carat weight factor to calculate the low and high price range.

Use cases

Research a diamond purchase before visiting a jeweler.
Compare price impact of trading one grade (e.g., VS1 vs VS2) against another.
Understand how carat weight exponentially affects price.
Educate yourself on the 4Cs before negotiating with a retailer.
Quickly assess whether a listed diamond price is in a reasonable market range.

Frequently Asked Questions

Last updated: 2026-09-19 · Reviewed by Nham Vu