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

As of October 2026, 1.50 to 1.99ct G SI1 natural princess diamonds typically cost HK$37,140 HKD to HK$108,799 HKD, with a median price of HK$66,003 HKD. There are currently 182 diamonds matching this specification available across retailers.

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

About 33% of these diamonds are available at multiple retailers, with an average price spread of 64%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct G SI1 Natural Princess

Quick answer

As of October 2026, there are 182 natural princess diamonds with G colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$37,140 HKD to HK$108,799 HKD, with a median of HK$66,003 HKD. At least 58 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 64%. Half of all listings fall between HK$28,908 HKD and HK$54,406 HKD per carat. The same specification in lab grown form lists at a median of about HK$2,860 HKD per carat. Over the last 30 days the median price moved -2.7% and the number of listings moved +10.6%.

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

182

Lowest Price

HK$24,532 HKD

Highest Price

HK$181,671 HKD

Average Price

HK$68,991 HKD