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 $641 USD to $1,837 USD, with a median price of $1,018 USD. There are currently 88 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 88 natural princess diamonds with J color and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $641 USD to $1,837 USD, with a median of $1,018 USD. 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 $881 USD and $1,578 USD per carat. Over the last 30 days the median price moved -4.8% and the number of listings moved +12.2%.

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

$530 USD

Highest Price

$3,948 USD

Average Price

$1,152 USD

Market Intelligence

Retailers Selling

Cross Retailer %

29.3%

Price Spread

58.2%

30-Day Price Trend

-4.8%

30-Day Supply Change

+12.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,198/ct

10th Percentile

$744

Median

$1,198

90th Percentile

$2,297

Score Distribution

271 diamonds scored across 4 quality tiers

Excellent

20 (7.4%)

Very Good

50 (18.5%)

Good

63 (23.2%)

Average

138 (50.9%)

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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