How much does a 3.00 to 4.99ct G SI1 natural round diamond cost?

As of September 2026, 3.00 to 4.99ct G SI1 natural round diamonds typically cost HK$204,588 HKD to HK$595,962 HKD, with a median price of HK$360,688 HKD. There are currently 525 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

3.00 to 4.99ct G SI1 Natural Round

Quick answer

As of September 2026, there are 525 natural round diamonds with G colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run HK$204,588 HKD to HK$595,962 HKD, with a median of HK$360,688 HKD. At least 55 retailers stock this exact specification. Half of all listings fall between HK$98,716 HKD and HK$135,124 HKD per carat. The same specification in lab grown form lists at a median of about HK$2,604 HKD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Round natural stones in the index: 2,094 USD per carat, -3.8% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

525

Lowest Price

HK$128,278 HKD

Highest Price

HK$1,205,072 HKD

Average Price

HK$392,339 HKD