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

As of November 2026, 0.50 to 0.74ct I SI2 natural princess diamonds typically cost €408 EUR to €769 EUR, with a median price of €579 EUR. There are currently 243 diamonds matching this specification available across retailers.

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

About 40% 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 I SI2 Natural Princess

Quick answer

As of November 2026, there are 243 natural princess diamonds with I color and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run €408 EUR to €769 EUR, with a median of €579 EUR. At least 40 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 29%. Half of all listings fall between €776 EUR and €1,027 EUR per carat. Over the last 30 days the median price moved -1.6% and the number of listings moved +46.6%.

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: November 2026

Available

243

Lowest Price

€300 EUR

Highest Price

€1,405 EUR

Average Price

€608 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

39.5%

Price Spread

28.5%

30-Day Price Trend

-1.6%

30-Day Supply Change

+46.6%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$981/ct

10th Percentile

$782

Median

$981

90th Percentile

$1,384

Score Distribution

512 diamonds scored across 4 quality tiers

Excellent

18 (3.5%)

Very Good

165 (32.2%)

Good

83 (16.2%)

Average

246 (48.0%)

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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