How much does a 3.00 to 4.99ct G I1 natural cushion diamond cost?

As of November 2026, 3.00 to 4.99ct G I1 natural cushion diamonds typically cost HK$143,996 HKD to HK$797,413 HKD, with a median price of HK$719,659 HKD. There are currently 2 diamonds matching this specification available across retailers.

Where can I find the best price on a G I1 cushion diamond?

About 24% of these diamonds are available at multiple retailers, with an average price spread of 31%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G I1 Natural Cushion

Quick answer

As of November 2026, there are 2 natural cushion diamonds with G colour and I1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run HK$143,996 HKD to HK$797,413 HKD, with a median of HK$719,659 HKD. At least 18 retailers stock this exact specification, and 24% of the stones appear at more than one of them, with an average price spread of 31%. Half of all listings fall between HK$47,704 HKD and HK$64,267 HKD per carat.

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. Cushion natural stones in the index: 2,881 USD per carat, -2.5% 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$129,435 HKD

Highest Price

HK$882,714 HKD

Average Price

HK$546,244 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

24.0%

Price Spread

31.4%

Price Range

Price per carat distribution across retailers

$6,716/ct

10th Percentile

$5,604

Median

$6,716

90th Percentile

$14,073

Score Distribution

11 diamonds scored across 3 quality tiers

Very Good

1 (9.1%)

Good

2 (18.2%)

Average

8 (72.7%)

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1