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

As of October 2026, 2.00 to 2.99ct J SI2 natural cushion diamonds typically cost £3,487 GBP to £12,803 GBP, with a median price of £6,408 GBP. There are currently 242 diamonds matching this specification available across retailers.

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

About 37% of these diamonds are available at multiple retailers, with an average price spread of 55%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct J SI2 Natural Cushion

Quick answer

As of October 2026, there are 242 natural cushion diamonds with J colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £3,487 GBP to £12,803 GBP, with a median of £6,408 GBP. At least 50 retailers stock this exact specification, and 37% of the stones appear at more than one of them, with an average price spread of 55%. Half of all listings fall between £1,981 GBP and £3,422 GBP per carat. The same specification in lab grown form lists at a median of about £1,249 GBP per carat. Over the last 30 days the median price moved -0.8% and the number of listings moved +8.6%.

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

242

Lowest Price

£1,806 GBP

Highest Price

£22,830 GBP

Average Price

£7,463 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

37.4%

Price Spread

55.1%

30-Day Price Trend

-0.8%

30-Day Supply Change

+8.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$3,503/ct

10th Percentile

$2,172

Median

$3,503

90th Percentile

$5,688

Score Distribution

630 diamonds scored across 4 quality tiers

Excellent

94 (14.9%)

Very Good

127 (20.2%)

Good

125 (19.8%)

Average

284 (45.1%)

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Consider Instead

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

Lab-Grown J SI2Same specifications, lab-grown origin

Save 52%

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