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

As of October 2026, 3.00 to 4.99ct D SI1 natural princess diamonds typically cost $49,646 NZD to $136,283 NZD, with a median price of $73,182 NZD. There are currently 11 diamonds matching this specification available across retailers.

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

About 27% of these diamonds are available at multiple retailers, with an average price spread of 28%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct D SI1 Natural Princess

Quick answer

As of October 2026, there are 11 natural princess diamonds with D colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $49,646 NZD to $136,283 NZD, with a median of $73,182 NZD. At least 48 retailers stock this exact specification, and 27% of the stones appear at more than one of them, with an average price spread of 28%. Half of all listings fall between $20,038 NZD and $26,387 NZD per carat. The same specification in lab grown form lists at a median of about $630 NZD per carat. Over the last 30 days the median price moved +1.8% and the number of listings moved +9.4%.

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

$39,242 NZD

Highest Price

$352,944 NZD

Average Price

$90,538 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

27.1%

Price Spread

27.6%

30-Day Price Trend

+1.8%

30-Day Supply Change

+9.4%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$12,909/ct

10th Percentile

$9,627

Median

$12,909

90th Percentile

$17,634

Score Distribution

31 diamonds scored across 4 quality tiers

Excellent

4 (12.9%)

Very Good

8 (25.8%)

Good

4 (12.9%)

Average

15 (48.4%)

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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