How much does a 2.00 to 2.99ct I IF natural marquise diamond cost?

As of September 2026, 2.00 to 2.99ct I IF natural marquise diamonds typically cost £13,412 GBP to £21,586 GBP, with a median price of £17,171 GBP. There are currently 25 diamonds matching this specification available across retailers.

Where can I find the best price on a I IF marquise diamond?

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2.00 to 2.99ct I IF Natural Marquise

Quick answer

As of September 2026, there are 25 natural marquise diamonds with I colour and IF clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £13,412 GBP to £21,586 GBP, with a median of £17,171 GBP. At least 27 retailers stock this exact specification. Half of all listings fall between £7,179 GBP and £9,347 GBP per carat. The same specification in lab grown form lists at a median of about £9,466 GBP per carat.

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. Marquise natural stones in the index: 2,114 USD per carat, -8.8% 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

£7,602 GBP

Highest Price

£27,496 GBP

Average Price

£17,154 GBP

Market Intelligence

Retailers Selling

Price Spread

26.4%

Price Range

Price per carat distribution across retailers

$11,061/ct

10th Percentile

$8,836

Median

$11,061

90th Percentile

$13,527

Score Distribution

25 diamonds scored across 4 quality tiers

Excellent

3 (12.0%)

Very Good

6 (24.0%)

Good

12 (48.0%)

Average

4 (16.0%)

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J IFJ colour is visually identical to I to the naked eye

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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