How much does a 5.00ct+ E IF lab grown cushion diamond cost?

As of September 2026, 5.00ct+ E IF lab grown cushion diamonds typically cost $6,133 AUD to $42,767 AUD, with a median price of $18,594 AUD. There are currently 132 diamonds matching this specification available across retailers.

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

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5.00ct+ E IF Lab Grown Cushion

Quick answer

As of September 2026, there are 132 lab grown cushion diamonds with E colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $6,133 AUD to $42,767 AUD, with a median of $18,594 AUD. At least 11 retailers stock this exact specification. Half of all listings fall between $14,010 AUD and $19,995 AUD per carat. The same specification in natural form lists at a median of about $56,897 AUD 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

132

Lowest Price

$3,633 AUD

Highest Price

$204,446 AUD

Average Price

$26,301 AUD

Market Intelligence

Retailers Selling

Price Spread

42.1%

Price Range

Price per carat distribution across retailers

$10,137/ct

10th Percentile

$9,016

Median

$10,137

90th Percentile

$16,753

Score Distribution

132 diamonds scored across 4 quality tiers

Excellent

36 (27.3%)

Very Good

48 (36.4%)

Good

33 (25.0%)

Average

15 (11.4%)

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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 74%

E VVS1VVS1 inclusions are not visible without magnification

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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