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

As of September 2026, 3.00 to 4.99ct E IF lab grown cushion diamonds typically cost $3,187 NZD to $20,886 NZD, with a median price of $9,265 NZD. There are currently 465 diamonds matching this specification available across retailers.

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3.00 to 4.99ct E IF Lab Grown Cushion

Quick answer

As of September 2026, there are 465 lab grown cushion diamonds with E colour and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $3,187 NZD to $20,886 NZD, with a median of $9,265 NZD. At least 41 retailers stock this exact specification. Half of all listings fall between $1,604 NZD and $4,940 NZD per carat. The same specification in natural form lists at a median of about $70,219 NZD 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

465

Lowest Price

$1,202 NZD

Highest Price

$96,273 NZD

Average Price

$11,603 NZD

Market Intelligence

Retailers Selling

Price Spread

130.3%

Price Range

Price per carat distribution across retailers

$1,474/ct

10th Percentile

$705

Median

$1,474

90th Percentile

$3,447

Score Distribution

465 diamonds scored across 4 quality tiers

Excellent

126 (27.1%)

Very Good

153 (32.9%)

Good

83 (17.8%)

Average

103 (22.2%)

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Consider Instead

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

F IFF colour is visually identical to E to the naked eye

Save 28%

E VVS1VVS1 inclusions are not visible without magnification

Save 47%

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