How much does a 1.50 to 1.99ct J I1 natural oval diamond cost?

As of October 2026, 1.50 to 1.99ct J I1 natural oval diamonds typically cost £2,093 GBP to £5,767 GBP, with a median price of £3,767 GBP. There are currently 45 diamonds matching this specification available across retailers.

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

About 19% of these diamonds are available at multiple retailers, with an average price spread of 58%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct J I1 Natural Oval

Quick answer

As of October 2026, there are 45 natural oval diamonds with J colour and I1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run £2,093 GBP to £5,767 GBP, with a median of £3,767 GBP. At least 24 retailers stock this exact specification, and 19% of the stones appear at more than one of them, with an average price spread of 58%. Half of all listings fall between £1,414 GBP and £2,630 GBP per carat. Over the last 30 days the median price moved -2.2% and the number of listings moved +5.3%.

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

Lowest Price

£968 GBP

Highest Price

£8,022 GBP

Average Price

£3,930 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

19.2%

Price Spread

58.3%

30-Day Price Trend

-2.2%

30-Day Supply Change

+5.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$2,779/ct

10th Percentile

$1,281

Median

$2,779

90th Percentile

$4,173

Score Distribution

175 diamonds scored across 4 quality tiers

Excellent

6 (3.4%)

Very Good

19 (10.9%)

Good

16 (9.1%)

Average

134 (76.6%)

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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