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

As of October 2026, 3.00 to 4.99ct J SI2 natural oval diamonds typically cost £11,100 GBP to £45,271 GBP, with a median price of £21,879 GBP. There are currently 204 diamonds matching this specification available across retailers.

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

About 42% of these diamonds are available at multiple retailers, with an average price spread of 46%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct J SI2 Natural Oval

Quick answer

As of October 2026, there are 204 natural oval diamonds with J colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £11,100 GBP to £45,271 GBP, with a median of £21,879 GBP. At least 49 retailers stock this exact specification, and 42% of the stones appear at more than one of them, with an average price spread of 46%. Half of all listings fall between £3,841 GBP and £6,078 GBP per carat. The same specification in lab grown form lists at a median of about £2,359 GBP per carat. Over the last 30 days the median price moved -4.2% and the number of listings moved +12.3%.

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

204

Lowest Price

£5,409 GBP

Highest Price

£85,294 GBP

Average Price

£25,218 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

42.0%

Price Spread

45.6%

30-Day Price Trend

-4.2%

30-Day Supply Change

+12.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$6,533/ct

10th Percentile

$3,923

Median

$6,533

90th Percentile

$9,802

Score Distribution

589 diamonds scored across 4 quality tiers

Excellent

53 (9.0%)

Very Good

144 (24.4%)

Good

81 (13.8%)

Average

311 (52.8%)

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Consider Instead

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

Lab-Grown J SI2Same specifications, lab-grown origin

Save 52%

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