How much does a 0.75 to 0.99ct F SI2 natural cushion diamond cost?

As of October 2026, 0.75 to 0.99ct F SI2 natural cushion diamonds typically cost HK$6,114 HKD to HK$23,298 HKD, with a median price of HK$11,349 HKD. There are currently 121 diamonds matching this specification available across retailers.

Where can I find the best price on a F SI2 cushion diamond?

About 32% of these diamonds are available at multiple retailers, with an average price spread of 85%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct F SI2 Natural Cushion

Quick answer

As of October 2026, there are 121 natural cushion diamonds with F colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run HK$6,114 HKD to HK$23,298 HKD, with a median of HK$11,349 HKD. At least 47 retailers stock this exact specification, and 32% of the stones appear at more than one of them, with an average price spread of 85%. Half of all listings fall between HK$9,236 HKD and HK$21,037 HKD per carat. The same specification in lab grown form lists at a median of about HK$5,473 HKD per carat. Over the last 30 days the median price moved -1.0% and the number of listings moved +3.5%.

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. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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

121

Lowest Price

HK$3,474 HKD

Highest Price

HK$60,179 HKD

Average Price

HK$13,151 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

31.5%

Price Spread

85.2%

30-Day Price Trend

-1.0%

30-Day Supply Change

+3.5%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,765/ct

10th Percentile

$918

Median

$1,765

90th Percentile

$3,460

Score Distribution

320 diamonds scored across 4 quality tiers

Excellent

41 (12.8%)

Very Good

49 (15.3%)

Good

120 (37.5%)

Average

110 (34.4%)

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Consider Instead

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Lab-Grown F SI2Same specifications, lab-grown origin

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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