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

As of October 2026, 0.20 to 0.49ct D SI1 natural princess diamonds typically cost HK$2,538 HKD to HK$5,995 HKD, with a median price of HK$3,809 HKD. 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 47%. 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 October 2026, there are 357 natural princess diamonds with D colour and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run HK$2,538 HKD to HK$5,995 HKD, with a median of HK$3,809 HKD. 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 47%. Half of all listings fall between HK$7,585 HKD and HK$11,598 HKD per carat. The same specification in lab grown form lists at a median of about HK$5,231 HKD per carat. Over the last 30 days the median price moved -13.5% and the number of listings moved +153.9%.

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

357

Lowest Price

HK$1,292 HKD

Highest Price

HK$13,406 HKD

Average Price

HK$4,175 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

77.5%

Price Spread

47.3%

30-Day Price Trend

-13.5%

30-Day Supply Change

+153.9%

Volatility (30d)

0.07

Price Range

Price per carat distribution across retailers

$1,081/ct

10th Percentile

$807

Median

$1,081

90th Percentile

$1,777

Score Distribution

697 diamonds scored across 4 quality tiers

Excellent

115 (16.5%)

Very Good

168 (24.1%)

Good

117 (16.8%)

Average

297 (42.6%)

Find Your Diamond

Search 357 D SI1 princess diamonds and compare prices.

Search Diamonds

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

Save 5%

Lab-Grown D SI1Same specifications, lab-grown origin

Save 38%

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