How much does a 0.50 to 0.74ct J SI1 natural princess diamond cost?

As of November 2026, 0.50 to 0.74ct J SI1 natural princess diamonds typically cost €428 EUR to €860 EUR, with a median price of €576 EUR. There are currently 170 diamonds matching this specification available across retailers.

Where can I find the best price on a J SI1 princess diamond?

About 34% of these diamonds are available at multiple retailers, with an average price spread of 50%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct J SI1 Natural Princess

Quick answer

As of November 2026, there are 170 natural princess diamonds with J color and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run €428 EUR to €860 EUR, with a median of €576 EUR. At least 54 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 50%. Half of all listings fall between €772 EUR and €1,235 EUR per carat. Over the last 30 days the median price moved -9.2% and the number of listings moved +35.7%.

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

170

Lowest Price

€254 EUR

Highest Price

€1,854 EUR

Average Price

€617 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

34.3%

Price Spread

50.2%

30-Day Price Trend

-9.2%

30-Day Supply Change

+35.7%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$1,030/ct

10th Percentile

$751

Median

$1,030

90th Percentile

$1,945

Score Distribution

433 diamonds scored across 4 quality tiers

Excellent

25 (5.8%)

Very Good

103 (23.8%)

Good

82 (18.9%)

Average

223 (51.5%)

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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