How much does a 1.50 to 1.99ct J SI1 natural princess diamond cost?

As of October 2026, 1.50 to 1.99ct J SI1 natural princess diamonds typically cost HK$21,864 HKD to HK$58,849 HKD, with a median price of HK$35,933 HKD. There are currently 167 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 49%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct J SI1 Natural Princess

Quick answer

As of October 2026, there are 167 natural princess diamonds with J colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$21,864 HKD to HK$58,849 HKD, with a median of HK$35,933 HKD. At least 55 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 49%. Half of all listings fall between HK$16,098 HKD and HK$25,767 HKD per carat. The same specification in lab grown form lists at a median of about HK$8,711 HKD per carat. Over the last 30 days the median price moved -2.4% and the number of listings moved +12.8%.

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

167

Lowest Price

HK$13,843 HKD

Highest Price

HK$96,078 HKD

Average Price

HK$38,569 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

34.4%

Price Spread

48.6%

30-Day Price Trend

-2.4%

30-Day Supply Change

+12.8%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$2,533/ct

10th Percentile

$1,707

Median

$2,533

90th Percentile

$4,115

Score Distribution

493 diamonds scored across 4 quality tiers

Excellent

62 (12.6%)

Very Good

76 (15.4%)

Good

88 (17.8%)

Average

267 (54.2%)

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Consider Instead

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

J SI2SI2 inclusions are not visible without magnification

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Lab-Grown J 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