How much does a 3.00 to 4.99ct I VS1 natural cushion diamond cost?

As of October 2026, 3.00 to 4.99ct I VS1 natural cushion diamonds typically cost HK$204,289 HKD to HK$524,736 HKD, with a median price of HK$301,052 HKD. There are currently 133 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 36%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I VS1 Natural Cushion

Quick answer

As of October 2026, there are 133 natural cushion diamonds with I colour and VS1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run HK$204,289 HKD to HK$524,736 HKD, with a median of HK$301,052 HKD. At least 60 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 36%. Half of all listings fall between HK$82,582 HKD and HK$118,237 HKD per carat. The same specification in lab grown form lists at a median of about HK$4,365 HKD per carat. Over the last 30 days the median price moved -2.3% and the number of listings moved +9.7%.

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. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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

133

Lowest Price

HK$104,795 HKD

Highest Price

HK$955,223 HKD

Average Price

HK$333,880 HKD