How much does a 0.20 to 0.49ct E SI2 natural princess diamond cost?

As of October 2026, 0.20 to 0.49ct E SI2 natural princess diamonds typically cost £169 GBP to £581 GBP, with a median price of £288 GBP. There are currently 174 diamonds matching this specification available across retailers.

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

About 88% of these diamonds are available at multiple retailers, with an average price spread of 33%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct E SI2 Natural Princess

Quick answer

As of October 2026, there are 174 natural princess diamonds with E colour and SI2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £169 GBP to £581 GBP, with a median of £288 GBP. At least 11 retailers stock this exact specification, and 88% of the stones appear at more than one of them, with an average price spread of 33%. Half of all listings fall between £691 GBP and £946 GBP per carat. Over the last 30 days the median price moved -16.3% and the number of listings moved +188.9%.

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. 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

174

Lowest Price

£115 GBP

Highest Price

£1,289 GBP

Average Price

£338 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

88.4%

Price Spread

33.1%

30-Day Price Trend

-16.3%

30-Day Supply Change

+188.9%

Volatility (30d)

0.06

Price Range

Price per carat distribution across retailers

$1,025/ct

10th Percentile

$665

Median

$1,025

90th Percentile

$1,562

Score Distribution

462 diamonds scored across 4 quality tiers

Excellent

101 (21.9%)

Very Good

109 (23.6%)

Good

114 (24.7%)

Average

138 (29.9%)

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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