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

As of October 2026, 0.75 to 0.99ct G SI1 natural heart diamonds typically cost HK$7,667 HKD to HK$24,373 HKD, with a median price of HK$11,003 HKD. There are currently 205 diamonds matching this specification available across retailers.

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

About 32% of these diamonds are available at multiple retailers, with an average price spread of 79%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct G SI1 Natural Heart

Quick answer

As of October 2026, there are 205 natural heart diamonds with G colour and SI1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run HK$7,667 HKD to HK$24,373 HKD, with a median of HK$11,003 HKD. At least 61 retailers stock this exact specification, and 32% of the stones appear at more than one of them, with an average price spread of 79%. Half of all listings fall between HK$10,639 HKD and HK$21,730 HKD per carat. The same specification in lab grown form lists at a median of about HK$3,327 HKD per carat. Over the last 30 days the median price moved -1.4% and the number of listings moved +7.9%.

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. Heart natural stones in the index: 2,374 USD per carat, +9.8% 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

205

Lowest Price

HK$4,756 HKD

Highest Price

HK$43,258 HKD

Average Price

HK$13,831 HKD