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

As of October 2026, 1.50 to 1.99ct I VS1 natural round diamonds typically cost HK$36,486 HKD to HK$105,605 HKD, with a median price of HK$61,108 HKD. There are currently 1,066 diamonds matching this specification available across retailers.

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

About 41% of these diamonds are available at multiple retailers, with an average price spread of 50%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct I VS1 Natural Round

Quick answer

As of October 2026, there are 1,066 natural round diamonds with I colour and VS1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$36,486 HKD to HK$105,605 HKD, with a median of HK$61,108 HKD. At least 71 retailers stock this exact specification, and 41% of the stones appear at more than one of them, with an average price spread of 50%. Half of all listings fall between HK$34,120 HKD and HK$56,131 HKD per carat. The same specification in lab grown form lists at a median of about HK$3,875 HKD per carat. Over the last 30 days the median price moved -1.5% and the number of listings moved +14.0%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

1,066

Lowest Price

HK$23,466 HKD

Highest Price

HK$209,742 HKD

Average Price

HK$66,917 HKD