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

As of October 2026, 0.75 to 0.99ct E SI2 natural princess diamonds typically cost £604 GBP to £1,874 GBP, with a median price of £951 GBP. There are currently 166 diamonds matching this specification available across retailers.

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

About 32% 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 E SI2 Natural Princess

Quick answer

As of October 2026, there are 166 natural princess diamonds with E colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run £604 GBP to £1,874 GBP, with a median of £951 GBP. At least 51 retailers stock this exact specification, and 32% of the stones appear at more than one of them, with an average price spread of 78%. Half of all listings fall between £875 GBP and £1,797 GBP per carat. The same specification in lab grown form lists at a median of about £335 GBP per carat. Over the last 30 days the median price moved -8.3% and the number of listings moved +16.4%.

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

166

Lowest Price

£452 GBP

Highest Price

£4,416 GBP

Average Price

£1,138 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

32.4%

Price Spread

78.4%

30-Day Price Trend

-8.3%

30-Day Supply Change

+16.4%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,566/ct

10th Percentile

$1,037

Median

$1,566

90th Percentile

$3,217

Score Distribution

416 diamonds scored across 4 quality tiers

Excellent

94 (22.6%)

Very Good

75 (18.0%)

Good

125 (30.0%)

Average

122 (29.3%)

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Consider Instead

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

F SI2F colour is visually identical to E to the naked eye

Save 10%

Lab-Grown E 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