How much does a 2.00 to 2.99ct G SI2 natural cushion diamond cost?

As of October 2026, 2.00 to 2.99ct G SI2 natural cushion diamonds typically cost £4,527 GBP to £16,599 GBP, with a median price of £9,418 GBP. There are currently 216 diamonds matching this specification available across retailers.

Where can I find the best price on a G SI2 cushion diamond?

About 36% of these diamonds are available at multiple retailers, with an average price spread of 57%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct G SI2 Natural Cushion

Quick answer

As of October 2026, there are 216 natural cushion diamonds with G colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £4,527 GBP to £16,599 GBP, with a median of £9,418 GBP. At least 52 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 57%. Half of all listings fall between £2,917 GBP and £5,150 GBP per carat. The same specification in lab grown form lists at a median of about £296 GBP per carat. Over the last 30 days the median price moved +0.2% and the number of listings moved +9.9%.

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. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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

216

Lowest Price

£1,879 GBP

Highest Price

£40,115 GBP

Average Price

£10,645 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

36.3%

Price Spread

57.4%

30-Day Price Trend

+0.2%

30-Day Supply Change

+9.9%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$5,214/ct

10th Percentile

$3,015

Median

$5,214

90th Percentile

$8,480

Score Distribution

568 diamonds scored across 4 quality tiers

Excellent

121 (21.3%)

Very Good

122 (21.5%)

Good

102 (18.0%)

Average

223 (39.3%)

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Consider Instead

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

H SI2H colour is visually identical to G to the naked eye

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Lab-Grown G SI2Same specifications, lab-grown origin

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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