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

As of October 2026, 3.00 to 4.99ct H SI2 natural oval diamonds typically cost £11,813 GBP to £46,241 GBP, with a median price of £26,845 GBP. There are currently 230 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 49%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct H SI2 Natural Oval

Quick answer

As of October 2026, there are 230 natural oval diamonds with H colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £11,813 GBP to £46,241 GBP, with a median of £26,845 GBP. At least 53 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 49%. Half of all listings fall between £5,116 GBP and £8,550 GBP per carat. The same specification in lab grown form lists at a median of about £290 GBP per carat. Over the last 30 days the median price moved +0.4% and the number of listings moved +0.7%.

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

230

Lowest Price

£6,911 GBP

Highest Price

£105,579 GBP

Average Price

£29,063 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

33.7%

Price Spread

49.1%

30-Day Price Trend

+0.4%

30-Day Supply Change

+0.7%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$9,363/ct

10th Percentile

$5,307

Median

$9,363

90th Percentile

$13,322

Score Distribution

669 diamonds scored across 4 quality tiers

Excellent

104 (15.5%)

Very Good

144 (21.5%)

Good

92 (13.8%)

Average

329 (49.2%)

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Consider Instead

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

Lab-Grown H SI2Same specifications, lab-grown origin

Save 96%

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