How much does a 3.00 to 4.99ct J SI1 natural princess diamond cost?

As of October 2026, 3.00 to 4.99ct J SI1 natural princess diamonds typically cost €12,791 EUR to €34,900 EUR, with a median price of €24,608 EUR. There are currently 25 diamonds matching this specification available across retailers.

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

About 30% of these diamonds are available at multiple retailers, with an average price spread of 46%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct J SI1 Natural Princess

Quick answer

As of October 2026, there are 25 natural princess diamonds with J colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run €12,791 EUR to €34,900 EUR, with a median of €24,608 EUR. At least 46 retailers stock this exact specification, and 30% of the stones appear at more than one of them, with an average price spread of 46%. Half of all listings fall between €4,329 EUR and €6,743 EUR per carat. The same specification in lab grown form lists at a median of about €1,386 EUR per carat. Over the last 30 days the median price moved -3.6% and the number of listings moved -3.7%.

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: October 2026

Available

Lowest Price

€9,054 EUR

Highest Price

€55,272 EUR

Average Price

€24,266 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

30.4%

Price Spread

46.4%

30-Day Price Trend

-3.6%

30-Day Supply Change

-3.7%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$5,811/ct

10th Percentile

$3,901

Median

$5,811

90th Percentile

$9,287

Score Distribution

68 diamonds scored across 4 quality tiers

Excellent

4 (5.9%)

Very Good

14 (20.6%)

Good

13 (19.1%)

Average

37 (54.4%)

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Consider Instead

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

Lab-Grown J SI1Same 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