How much does a 1.50 to 1.99ct K SI2 natural princess diamond cost?

As of November 6, 2026, 1.50 to 1.99ct K SI2 natural princess diamonds typically cost HK$15,533 HKD to HK$34,013 HKD, with a median price of HK$20,886 HKD. There are currently 178 diamonds matching this specification available across retailers.

Where can I find the best price on a K SI2 princess diamond?

About 44% of these diamonds are available at multiple retailers, with an average price spread of 37%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct K SI2 Natural Princess

Quick answer

As of November 6, 2026, there are 178 natural princess diamonds with K colour and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$15,533 HKD to HK$34,013 HKD, with a median of HK$20,886 HKD. Half of all listings fall between HK$11,311 HKD and HK$16,301 HKD per carat. The same specification in lab grown form lists at a median of about HK$8,907 HKD per carat. Over the last 30 days the median price moved -1.9% and the number of listings moved +17.4%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Princess natural stones in the index: 1,991 USD per carat, -8.2% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

178

Lowest Price

HK$13,155 HKD

Highest Price

HK$85,402 HKD

Average Price

HK$23,604 HKD

Market Intelligence

Cross Retailer %

43.8%

Price Spread

37.0%

30-Day Price Trend

-1.9%

30-Day Supply Change

+17.4%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,718/ct

10th Percentile

$1,316

Median

$1,718

90th Percentile

$2,686

Score Distribution

178 diamonds scored across 4 quality tiers

Excellent

43 (24.2%)

Very Good

57 (32.0%)

Good

38 (21.3%)

Average

40 (22.5%)

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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