How much does a 0.20 to 0.49ct D SI1 natural princess diamond cost?

As of November 2026, 0.20 to 0.49ct D SI1 natural princess diamonds typically cost €291 EUR to €690 EUR, with a median price of €437 EUR. There are currently 357 diamonds matching this specification available across retailers.

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

About 78% of these diamonds are available at multiple retailers, with an average price spread of 52%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct D SI1 Natural Princess

Quick answer

As of November 2026, there are 357 natural princess diamonds with D color and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run €291 EUR to €690 EUR, with a median of €437 EUR. At least 20 retailers stock this exact specification, and 78% of the stones appear at more than one of them, with an average price spread of 52%. Half of all listings fall between €868 EUR and €1,372 EUR per carat. The same specification in lab grown form lists at a median of about €581 EUR per carat. Over the last 30 days the median price moved -4.2% and the number of listings moved +167.0%.

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: November 2026

Available

357

Lowest Price

€150 EUR

Highest Price

€1,529 EUR

Average Price

€477 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

77.5%

Price Spread

52.0%

30-Day Price Trend

-4.2%

30-Day Supply Change

+167.0%

Volatility (30d)

0.07

Price Range

Price per carat distribution across retailers

$1,084/ct

10th Percentile

$874

Median

$1,084

90th Percentile

$1,862

Score Distribution

690 diamonds scored across 4 quality tiers

Excellent

110 (15.9%)

Very Good

174 (25.2%)

Good

113 (16.4%)

Average

293 (42.5%)

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Consider Instead

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

D SI2SI2 inclusions are not visible without magnification

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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