How much does a 0.50 to 0.74ct G SI2 natural princess diamond cost?

As of October 2026, 0.50 to 0.74ct G SI2 natural princess diamonds typically cost £362 GBP to £669 GBP, with a median price of £502 GBP. There are currently 474 diamonds matching this specification available across retailers.

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

About 41% of these diamonds are available at multiple retailers, with an average price spread of 29%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct G SI2 Natural Princess

Quick answer

As of October 2026, there are 474 natural princess diamonds with G colour and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run £362 GBP to £669 GBP, with a median of £502 GBP. At least 49 retailers stock this exact specification, and 41% of the stones appear at more than one of them, with an average price spread of 29%. Half of all listings fall between £707 GBP and £939 GBP per carat. The same specification in lab grown form lists at a median of about £264 GBP per carat. Over the last 30 days the median price moved -2.8% and the number of listings moved +51.0%.

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

474

Lowest Price

£245 GBP

Highest Price

£1,323 GBP

Average Price

£534 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

41.0%

Price Spread

28.5%

30-Day Price Trend

-2.8%

30-Day Supply Change

+51.0%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,084/ct

10th Percentile

$872

Median

$1,084

90th Percentile

$1,567

Score Distribution

1.0K diamonds scored across 4 quality tiers

Excellent

188 (18.5%)

Very Good

278 (27.4%)

Good

109 (10.7%)

Average

441 (43.4%)

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Consider Instead

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

H SI2H colour is visually identical to G to the naked eye

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Lab-Grown G SI2Same specifications, lab-grown origin

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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