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 $2,380 USD to $17,241 USD, with a median price of $5,551 USD. There are currently 1,461 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 103%. 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 1,461 lab grown cushion diamonds with D color and FL clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $2,380 USD to $17,241 USD, with a median of $5,551 USD. 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 103%. Half of all listings fall between $1,119 USD and $3,049 USD per carat. The same specification in natural form lists at a median of about $28,087 USD per carat. Over the last 30 days the median price moved -16.8% and the number of listings moved +20.1%.

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

1,461

Lowest Price

$1,898 USD

Highest Price

$49,088 USD

Average Price

$7,848 USD

Market Intelligence

Retailers Selling

Cross Retailer %

47.0%

Price Spread

103.4%

30-Day Price Trend

-16.8%

30-Day Supply Change

+20.1%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$1,866/ct

10th Percentile

$839

Median

$1,866

90th Percentile

$4,254

Score Distribution

4.5K diamonds scored across 5 quality tiers

Exceptional

130 (2.9%)

Excellent

1,759 (38.8%)

Very Good

516 (11.4%)

Good

1,734 (38.3%)

Average

391 (8.6%)

Find Your Diamond

Search 1,461 D FL cushion diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

D IFIF inclusions are not visible without magnification

Save 28%

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