How much does a 3.00 to 4.99ct J I1 natural oval diamond cost?

As of September 2026, 3.00 to 4.99ct J I1 natural oval diamonds typically cost £10,342 GBP to £39,534 GBP, with a median price of £19,430 GBP. There are currently 43 diamonds matching this specification available across retailers.

Where can I find the best price on a J I1 oval diamond?

About 28% of these diamonds are available at multiple retailers, with an average price spread of 55%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct J I1 Natural Oval

Quick answer

As of September 2026, there are 43 natural oval diamonds with J colour and I1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £10,342 GBP to £39,534 GBP, with a median of £19,430 GBP. At least 16 retailers stock this exact specification, and 28% of the stones appear at more than one of them, with an average price spread of 55%. Half of all listings fall between £4,336 GBP and £7,662 GBP per carat. The same specification in lab grown form lists at a median of about £3,441 GBP per carat. Over the last 30 days the median price moved -8.4% and the number of listings moved -25.0%.

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. Oval natural stones in the index: 2,380 USD per carat, -9.6% 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

Lowest Price

£6,419 GBP

Highest Price

£98,195 GBP

Average Price

£22,985 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

28.3%

Price Spread

54.5%

30-Day Price Trend

-8.4%

30-Day Supply Change

-25.0%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$7,751/ct

10th Percentile

$4,105

Median

$7,751

90th Percentile

$10,542

Score Distribution

43 diamonds scored across 3 quality tiers

Very Good

12 (27.9%)

Good

8 (18.6%)

Average

23 (53.5%)

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Consider Instead

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

Lab-Grown J I1Same specifications, lab-grown origin

Save 55%

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