How much does a 3.00 to 4.99ct D SI2 natural round diamond cost?

As of September 2026, 3.00 to 4.99ct D SI2 natural round diamonds typically cost €20,632 EUR to €65,274 EUR, with a median price of €36,911 EUR. There are currently 504 diamonds matching this specification available across retailers.

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3.00 to 4.99ct D SI2 Natural Round

Quick answer

As of September 2026, there are 504 natural round diamonds with D colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run €20,632 EUR to €65,274 EUR, with a median of €36,911 EUR. At least 45 retailers stock this exact specification. Half of all listings fall between €9,309 EUR and €13,984 EUR per carat. The same specification in lab grown form lists at a median of about €6,890 EUR per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Round natural stones in the index: 2,094 USD per carat, -3.8% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

504

Lowest Price

€11,707 EUR

Highest Price

€116,000 EUR

Average Price

€40,674 EUR

Market Intelligence

Retailers Selling

Price Spread

40.5%

Price Range

Price per carat distribution across retailers

$13,398/ct

10th Percentile

$8,481

Median

$13,398

90th Percentile

$19,061

Score Distribution

504 diamonds scored across 4 quality tiers

Excellent

160 (31.7%)

Very Good

133 (26.4%)

Good

112 (22.2%)

Average

99 (19.6%)

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Consider Instead

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Lab-Grown D SI2Same specifications, lab-grown origin

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1