How much does a 0.75 to 0.99ct G SI1 natural round diamond cost?

As of October 2026, 0.75 to 0.99ct G SI1 natural round diamonds typically cost HK$9,854 HKD to HK$30,452 HKD, with a median price of HK$16,079 HKD. There are currently 2,205 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 53%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct G SI1 Natural Round

Quick answer

As of October 2026, there are 2,205 natural round diamonds with G colour and SI1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run HK$9,854 HKD to HK$30,452 HKD, with a median of HK$16,079 HKD. At least 67 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 53%. Half of all listings fall between HK$15,282 HKD and HK$25,314 HKD per carat. The same specification in lab grown form lists at a median of about HK$4,044 HKD per carat. Over the last 30 days the median price moved -1.5% and the number of listings moved +8.7%.

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. 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

2,205

Lowest Price

HK$5,794 HKD

Highest Price

HK$73,569 HKD

Average Price

HK$18,253 HKD