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

As of October 2026, 0.75 to 0.99ct J SI2 natural princess diamonds typically cost €573 EUR to €1,640 EUR, with a median price of €905 EUR. There are currently 85 diamonds matching this specification available across retailers.

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

About 29% of these diamonds are available at multiple retailers, with an average price spread of 58%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct J SI2 Natural Princess

Quick answer

As of October 2026, there are 85 natural princess diamonds with J colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run €573 EUR to €1,640 EUR, with a median of €905 EUR. At least 44 retailers stock this exact specification, and 29% of the stones appear at more than one of them, with an average price spread of 58%. Half of all listings fall between €779 EUR and €1,402 EUR per carat. Over the last 30 days the median price moved -4.4% and the number of listings moved +9.6%.

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: October 2026

Available

Lowest Price

€474 EUR

Highest Price

€3,534 EUR

Average Price

€1,025 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

29.4%

Price Spread

58.4%

30-Day Price Trend

-4.4%

30-Day Supply Change

+9.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,193/ct

10th Percentile

$739

Median

$1,193

90th Percentile

$2,302

Score Distribution

252 diamonds scored across 4 quality tiers

Excellent

18 (7.1%)

Very Good

45 (17.9%)

Good

52 (20.6%)

Average

137 (54.4%)

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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