How much does a 1.50 to 1.99ct I VS1 natural radiant diamond cost?

As of October 2026, 1.50 to 1.99ct I VS1 natural radiant diamonds typically cost HK$41,975 HKD to HK$119,602 HKD, with a median price of HK$65,507 HKD. There are currently 121 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS1 radiant diamond?

About 36% of these diamonds are available at multiple retailers, with an average price spread of 41%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct I VS1 Natural Radiant

Quick answer

As of October 2026, there are 121 natural radiant diamonds with I colour and VS1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$41,975 HKD to HK$119,602 HKD, with a median of HK$65,507 HKD. At least 65 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 41%. Half of all listings fall between HK$37,929 HKD and HK$56,903 HKD per carat. The same specification in lab grown form lists at a median of about HK$3,688 HKD per carat. Over the last 30 days the median price moved -0.8% and the number of listings moved +16.5%.

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. Radiant natural stones in the index: 3,091 USD per carat, +13.2% 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

121

Lowest Price

HK$24,791 HKD

Highest Price

HK$171,415 HKD

Average Price

HK$73,315 HKD