How much does a 2.00 to 2.99ct H SI1 natural cushion diamond cost?

As of October 2026, 2.00 to 2.99ct H SI1 natural cushion diamonds typically cost £6,200 GBP to £19,360 GBP, with a median price of £11,058 GBP. There are currently 292 diamonds matching this specification available across retailers.

Where can I find the best price on a H SI1 cushion diamond?

About 33% of these diamonds are available at multiple retailers, with an average price spread of 49%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct H SI1 Natural Cushion

Quick answer

As of October 2026, there are 292 natural cushion diamonds with H colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £6,200 GBP to £19,360 GBP, with a median of £11,058 GBP. At least 56 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 49%. Half of all listings fall between £3,338 GBP and £5,470 GBP per carat. The same specification in lab grown form lists at a median of about £833 GBP per carat. Over the last 30 days the median price moved -1.3% and the number of listings moved +4.5%.

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

292

Lowest Price

£3,203 GBP

Highest Price

£36,267 GBP

Average Price

£12,290 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

32.6%

Price Spread

49.3%

30-Day Price Trend

-1.3%

30-Day Supply Change

+4.5%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$5,793/ct

10th Percentile

$3,638

Median

$5,793

90th Percentile

$8,775

Score Distribution

782 diamonds scored across 4 quality tiers

Excellent

73 (9.3%)

Very Good

143 (18.3%)

Good

192 (24.6%)

Average

374 (47.8%)

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Consider Instead

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

H SI2SI2 inclusions are not visible without magnification

Save 18%

Lab-Grown H SI1Same specifications, lab-grown origin

Save 74%

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