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 HK$187,556 HKD to HK$593,370 HKD, with a median price of HK$335,535 HKD. There are currently 504 diamonds matching this specification available across retailers.

Where can I find the best price on a D SI2 round diamond?

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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 HK$187,556 HKD to HK$593,370 HKD, with a median of HK$335,535 HKD. At least 45 retailers stock this exact specification. Half of all listings fall between HK$84,583 HKD and HK$126,720 HKD per carat. The same specification in lab grown form lists at a median of about HK$62,653 HKD 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

HK$106,418 HKD

Highest Price

HK$1,054,498 HKD

Average Price

HK$369,774 HKD

Market Intelligence

Retailers Selling

Price Spread

40.2%

Price Range

Price per carat distribution across retailers

$13,353/ct

10th Percentile

$8,470

Median

$13,353

90th Percentile

$19,031

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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D I1I1 inclusions are not visible without magnification

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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