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

As of September 2026, 5.00ct+ D SI1 natural princess diamonds typically cost €95,317 EUR to €99,351 EUR, with a median price of €97,334 EUR. There are currently 2 diamonds matching this specification available across retailers.

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5.00ct+ D SI1 Natural Princess

Quick answer

As of September 2026, there are 2 natural princess diamonds with D colour and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run €95,317 EUR to €99,351 EUR, with a median of €97,334 EUR. At least 24 retailers stock this exact specification. Half of all listings fall between €18,593 EUR and €22,228 EUR per carat. The same specification in lab grown form lists at a median of about €207 EUR per carat.

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

5.01ct Princess D SI1, GIA, score 82 of 100, from €94,812 EUR

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Princess natural stones in the index: 2,073 USD per carat, -3.2% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

€94,812 EUR

Highest Price

€114,028 EUR

Average Price

€97,334 EUR

Market Intelligence

Retailers Selling

Price Spread

17.8%

Price Range

Price per carat distribution across retailers

$23,620/ct

10th Percentile

$14,303

Median

$23,620

90th Percentile

$26,595

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

Save 99%

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