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

As of October 2026, 3.00 to 4.99ct D FL lab grown cushion diamonds typically cost €2,108 EUR to €15,590 EUR, with a median price of €5,302 EUR. There are currently 1,442 diamonds matching this specification available across retailers.

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

About 47% of these diamonds are available at multiple retailers, with an average price spread of 102%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct D FL Lab Grown Cushion

Quick answer

As of October 2026, there are 1,442 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 €2,108 EUR to €15,590 EUR, with a median of €5,302 EUR. At least 39 retailers stock this exact specification, and 47% of the stones appear at more than one of them, with an average price spread of 102%. Half of all listings fall between €993 EUR and €2,683 EUR per carat. The same specification in natural form lists at a median of about €23,650 EUR per carat. Over the last 30 days the median price moved -18.3% and the number of listings moved +18.6%.

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 lab grown stones in the index: 516 USD per carat, +6.9% 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

1,442

Lowest Price

€1,628 EUR

Highest Price

€44,104 EUR

Average Price

€7,216 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

46.9%

Price Spread

102.0%

30-Day Price Trend

-18.3%

30-Day Supply Change

+18.6%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$1,844/ct

10th Percentile

$809

Median

$1,844

90th Percentile

$4,238

Score Distribution

4.2K diamonds scored across 5 quality tiers

Exceptional

118 (2.8%)

Excellent

1,390 (32.9%)

Very Good

636 (15.0%)

Good

1,806 (42.7%)

Average

280 (6.6%)

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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