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

As of October 2026, 1.50 to 1.99ct H SI1 natural princess diamonds typically cost HK$30,941 HKD to HK$91,470 HKD, with a median price of HK$56,532 HKD. There are currently 202 diamonds matching this specification available across retailers.

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

About 30% of these diamonds are available at multiple retailers, with an average price spread of 59%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct H SI1 Natural Princess

Quick answer

As of October 2026, there are 202 natural princess diamonds with H colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$30,941 HKD to HK$91,470 HKD, with a median of HK$56,532 HKD. At least 59 retailers stock this exact specification, and 30% of the stones appear at more than one of them, with an average price spread of 59%. Half of all listings fall between HK$22,993 HKD and HK$40,205 HKD per carat. The same specification in lab grown form lists at a median of about HK$6,951 HKD per carat. Over the last 30 days the median price moved -2.5% and the number of listings moved +7.2%.

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

202

Lowest Price

HK$20,844 HKD

Highest Price

HK$147,115 HKD

Average Price

HK$59,394 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

29.7%

Price Spread

58.6%

30-Day Price Trend

-2.5%

30-Day Supply Change

+7.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$3,747/ct

10th Percentile

$2,441

Median

$3,747

90th Percentile

$6,352

Score Distribution

676 diamonds scored across 4 quality tiers

Excellent

73 (10.8%)

Very Good

94 (13.9%)

Good

132 (19.5%)

Average

377 (55.8%)

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Consider Instead

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

H SI2SI2 inclusions are not visible without magnification

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Lab-Grown H 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