How much does a 2.00 to 2.99ct G SI1 natural marquise diamond cost?

As of November 2026, 2.00 to 2.99ct G SI1 natural marquise diamonds typically cost HK$120,952 HKD to HK$366,576 HKD, with a median price of HK$171,720 HKD. There are currently 69 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 25%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct G SI1 Natural Marquise

Quick answer

As of November 2026, there are 69 natural marquise diamonds with G colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run HK$120,952 HKD to HK$366,576 HKD, with a median of HK$171,720 HKD. At least 60 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 25%. Half of all listings fall between HK$79,829 HKD and HK$102,780 HKD per carat. The same specification in lab grown form lists at a median of about HK$4,221 HKD per carat. Over the last 30 days the median price moved -3.1% and the number of listings moved +21.5%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Marquise natural stones in the index: 2,177 USD per carat, -4.2% 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: November 2026

Available

Lowest Price

HK$86,309 HKD

Highest Price

HK$622,164 HKD

Average Price

HK$215,031 HKD