How much does a 1.00 to 1.49ct G SI1 natural marquise diamond cost?

As of November 2026, 1.00 to 1.49ct G SI1 natural marquise diamonds typically cost HK$21,835 HKD to HK$52,333 HKD, with a median price of HK$31,191 HKD. There are currently 291 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 39%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct G SI1 Natural Marquise

Quick answer

As of November 2026, there are 291 natural marquise diamonds with G colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run HK$21,835 HKD to HK$52,333 HKD, with a median of HK$31,191 HKD. At least 64 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 39%. Half of all listings fall between HK$26,009 HKD and HK$38,018 HKD per carat. The same specification in lab grown form lists at a median of about HK$3,180 HKD per carat. Over the last 30 days the median price moved -0.0% and the number of listings moved +13.3%.

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

291

Lowest Price

HK$14,050 HKD

Highest Price

HK$135,383 HKD

Average Price

HK$35,380 HKD