How much does a 2.00 to 2.99ct K I1 natural round diamond cost?

As of November 6, 2026, 2.00 to 2.99ct K I1 natural round diamonds typically cost £2,267 GBP to £9,969 GBP, with a median price of £5,685 GBP. There are currently 205 diamonds matching this specification available across retailers.

Where can I find the best price on a K I1 round diamond?

About 39% 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.

2.00 to 2.99ct K I1 Natural Round

Quick answer

As of November 6, 2026, there are 205 natural round diamonds with K colour and I1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £2,267 GBP to £9,969 GBP, with a median of £5,685 GBP. Half of all listings fall between £1,858 GBP and £3,464 GBP per carat. The same specification in lab grown form lists at a median of about £536 GBP per carat. Over the last 30 days the median price moved -3.2% and the number of listings moved +12.2%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Round natural stones in the index: 2,124 USD per carat, -6.9% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

205

Lowest Price

£945 GBP

Highest Price

£20,737 GBP

Average Price

£6,020 GBP

Market Intelligence

Cross Retailer %

39.0%

Price Spread

58.3%

30-Day Price Trend

-3.2%

30-Day Supply Change

+12.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$3,711/ct

10th Percentile

$1,522

Median

$3,711

90th Percentile

$5,974

Score Distribution

205 diamonds scored across 4 quality tiers

Excellent

13 (6.3%)

Very Good

70 (34.1%)

Good

39 (19.0%)

Average

83 (40.5%)

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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