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

As of October 2026, 2.00 to 2.99ct D SI2 natural cushion diamonds typically cost £5,991 GBP to £16,411 GBP, with a median price of £9,978 GBP. There are currently 114 diamonds matching this specification available across retailers.

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

About 35% 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 D SI2 Natural Cushion

Quick answer

As of October 2026, there are 114 natural cushion diamonds with D colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £5,991 GBP to £16,411 GBP, with a median of £9,978 GBP. At least 53 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 57%. Half of all listings fall between £3,263 GBP and £5,662 GBP per carat. The same specification in lab grown form lists at a median of about £360 GBP per carat. Over the last 30 days the median price moved -1.4% 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

114

Lowest Price

£3,799 GBP

Highest Price

£43,381 GBP

Average Price

£11,050 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

35.1%

Price Spread

56.9%

30-Day Price Trend

-1.4%

30-Day Supply Change

+9.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$5,654/ct

10th Percentile

$3,423

Median

$5,654

90th Percentile

$9,214

Score Distribution

264 diamonds scored across 4 quality tiers

Excellent

70 (26.5%)

Very Good

69 (26.1%)

Good

47 (17.8%)

Average

78 (29.5%)

Find Your Diamond

Search 114 D SI2 cushion diamonds and compare prices.

Search Diamonds

Consider Instead

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

Lab-Grown D SI2Same specifications, lab-grown origin

Save 89%

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