How much does a 0.75 to 0.99ct D SI2 natural princess diamond cost?

As of October 2026, 0.75 to 0.99ct D SI2 natural princess diamonds typically cost £742 GBP to £2,324 GBP, with a median price of £1,399 GBP. There are currently 48 diamonds matching this specification available across retailers.

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

About 33% of these diamonds are available at multiple retailers, with an average price spread of 78%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct D SI2 Natural Princess

Quick answer

As of October 2026, there are 48 natural princess diamonds with D colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run £742 GBP to £2,324 GBP, with a median of £1,399 GBP. At least 51 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 78%. Half of all listings fall between £869 GBP and £1,785 GBP per carat. The same specification in lab grown form lists at a median of about £332 GBP per carat. Over the last 30 days the median price moved -8.1% and the number of listings moved +14.4%.

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. Princess natural stones in the index: 2,158 USD per carat, +5.7% 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

Lowest Price

£605 GBP

Highest Price

£4,452 GBP

Average Price

£1,487 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

32.5%

Price Spread

78.4%

30-Day Price Trend

-8.1%

30-Day Supply Change

+14.4%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,566/ct

10th Percentile

$1,037

Median

$1,566

90th Percentile

$3,218

Score Distribution

153 diamonds scored across 4 quality tiers

Excellent

23 (15.0%)

Very Good

15 (9.8%)

Good

31 (20.3%)

Average

84 (54.9%)

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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 72%

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