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

As of September 2026, 5.00ct+ D IF lab grown cushion diamonds typically cost $12,787 NZD to $57,504 NZD, with a median price of $25,560 NZD. There are currently 691 diamonds matching this specification available across retailers.

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

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5.00ct+ D IF Lab Grown Cushion

Quick answer

As of September 2026, there are 691 lab grown cushion diamonds with D colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $12,787 NZD to $57,504 NZD, with a median of $25,560 NZD. At least 13 retailers stock this exact specification. Half of all listings fall between $17,478 NZD and $28,324 NZD per carat. The same specification in natural form lists at a median of about $70,458 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

691

Lowest Price

$6,397 NZD

Highest Price

$838,211 NZD

Average Price

$36,313 NZD

Market Intelligence

Retailers Selling

Price Spread

50.7%

Price Range

Price per carat distribution across retailers

$12,326/ct

10th Percentile

$9,255

Median

$12,326

90th Percentile

$18,191

Score Distribution

691 diamonds scored across 4 quality tiers

Excellent

170 (24.6%)

Very Good

249 (36.0%)

Good

212 (30.7%)

Average

60 (8.7%)

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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