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

As of October 2026, 3.00 to 4.99ct D IF lab grown cushion diamonds typically cost €1,492 EUR to €8,537 EUR, with a median price of €3,289 EUR. There are currently 1,415 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 82%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct D IF Lab Grown Cushion

Quick answer

As of October 2026, there are 1,415 lab grown cushion diamonds with D color and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run €1,492 EUR to €8,537 EUR, with a median of €3,289 EUR. At least 52 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 82%. Half of all listings fall between €702 EUR and €1,650 EUR per carat. The same specification in natural form lists at a median of about €24,787 EUR per carat. Over the last 30 days the median price moved -15.6% and the number of listings moved +8.3%.

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

1,415

Lowest Price

€1,108 EUR

Highest Price

€42,651 EUR

Average Price

€4,474 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

31.0%

Price Spread

81.7%

30-Day Price Trend

-15.6%

30-Day Supply Change

+8.3%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$1,296/ct

10th Percentile

$588

Median

$1,296

90th Percentile

$2,942

Score Distribution

4.6K diamonds scored across 5 quality tiers

Exceptional

114 (2.5%)

Excellent

1,336 (29.3%)

Very Good

2,446 (53.7%)

Good

484 (10.6%)

Average

178 (3.9%)

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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