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

As of October 2026, 3.00 to 4.99ct D SI2 natural oval diamonds typically cost £22,331 GBP to £59,482 GBP, with a median price of £35,374 GBP. There are currently 144 diamonds matching this specification available across retailers.

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

About 32% of these diamonds are available at multiple retailers, with an average price spread of 34%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct D SI2 Natural Oval

Quick answer

As of October 2026, there are 144 natural oval diamonds with D colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £22,331 GBP to £59,482 GBP, with a median of £35,374 GBP. At least 51 retailers stock this exact specification, and 32% of the stones appear at more than one of them, with an average price spread of 34%. Half of all listings fall between £7,933 GBP and £11,143 GBP per carat. The same specification in lab grown form lists at a median of about £262 GBP per carat. Over the last 30 days the median price moved +0.6% and the number of listings moved +7.5%.

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

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Oval natural stones in the index: 2,655 USD per carat, +10.2% month on month. See the full index release

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

Last updated: October 2026

Available

144

Lowest Price

£13,867 GBP

Highest Price

£103,764 GBP

Average Price

£38,340 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

31.9%

Price Spread

33.8%

30-Day Price Trend

+0.6%

30-Day Supply Change

+7.5%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$12,643/ct

10th Percentile

$8,833

Median

$12,643

90th Percentile

$17,165

Score Distribution

445 diamonds scored across 4 quality tiers

Excellent

108 (24.3%)

Very Good

98 (22.0%)

Good

79 (17.8%)

Average

160 (36.0%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

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