How much does a 3.00 to 4.99ct D FL lab grown cushion diamond cost?

As of September 2026, 3.00 to 4.99ct D FL lab grown cushion diamonds typically cost HK$27,431 HKD to HK$157,285 HKD, with a median price of HK$78,708 HKD. There are currently 4,968 diamonds matching this specification available across retailers.

Where can I find the best price on a D FL cushion diamond?

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3.00 to 4.99ct D FL Lab Grown Cushion

Quick answer

As of September 2026, there are 4,968 lab grown cushion diamonds with D colour and FL clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run HK$27,431 HKD to HK$157,285 HKD, with a median of HK$78,708 HKD. At least 30 retailers stock this exact specification. Half of all listings fall between HK$10,883 HKD and HK$33,607 HKD per carat. The same specification in natural form lists at a median of about HK$247,654 HKD per carat.

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

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Cushion lab grown stones in the index: 466 USD per carat, -14.7% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

4,968

Lowest Price

HK$16,892 HKD

Highest Price

HK$1,211,308 HKD

Average Price

HK$87,672 HKD

Market Intelligence

Retailers Selling

Price Spread

98.9%

Price Range

Price per carat distribution across retailers

$2,987/ct

10th Percentile

$1,061

Median

$2,987

90th Percentile

$6,316

Score Distribution

5.0K diamonds scored across 4 quality tiers

Excellent

1,226 (24.7%)

Very Good

789 (15.9%)

Good

1,827 (36.8%)

Average

1,126 (22.7%)

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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