How much does a 5.00ct+ D SI1 natural princess diamond cost?

As of October 2026, 5.00ct+ D SI1 natural princess diamonds typically cost €107,341 EUR to €179,060 EUR, with a median price of €143,201 EUR. There are currently 1 diamonds matching this specification available across retailers.

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

About 54% of these diamonds are available at multiple retailers, with an average price spread of 20%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ D SI1 Natural Princess

Quick answer

As of October 2026, there are 1 natural princess diamonds with D color and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run €107,341 EUR to €179,060 EUR, with a median of €143,201 EUR. At least 27 retailers stock this exact specification, and 54% of the stones appear at more than one of them, with an average price spread of 20%. Half of all listings fall between €19,927 EUR and €24,230 EUR per carat. The same specification in lab grown form lists at a median of about €221 EUR per carat. Over the last 30 days the median price moved +3.4% and the number of listings moved -3.6%.

Three of the best scored stones at this specification right now:

5.01ct Princess D SI1, GIA, grade A, from €98,377 EUR

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

€98,377 EUR

Highest Price

€214,752 EUR

Average Price

€143,201 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

53.9%

Price Spread

19.6%

30-Day Price Trend

+3.4%

30-Day Supply Change

-3.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$24,525/ct

10th Percentile

$21,168

Median

$24,525

90th Percentile

$28,828

Score Distribution

2 diamonds scored across 2 quality tiers

Excellent

1 (50.0%)

Good

1 (50.0%)

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Consider Instead

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

Lab-Grown D 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