How much does a 0.20 to 0.49ct D IF lab grown cushion diamond cost?

As of October 2026, 0.20 to 0.49ct D IF lab grown cushion diamonds typically cost $361 NZD to $1,125 NZD, with a median price of $799 NZD. There are currently 17 diamonds matching this specification available across retailers.

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

About 42% of these diamonds are available at multiple retailers, with an average price spread of 86%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct D IF Lab Grown Cushion

Quick answer

As of October 2026, there are 17 lab grown cushion diamonds with D colour and IF clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $361 NZD to $1,125 NZD, with a median of $799 NZD. At least 28 retailers stock this exact specification, and 42% of the stones appear at more than one of them, with an average price spread of 86%. Half of all listings fall between $1,802 NZD and $3,777 NZD per carat. The same specification in natural form lists at a median of about $4,135 NZD per carat. Over the last 30 days the median price moved +2.1% and the number of listings moved +10.0%.

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

Lowest Price

$151 NZD

Highest Price

$2,689 NZD

Average Price

$823 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

41.7%

Price Spread

86.0%

30-Day Price Trend

+2.1%

30-Day Supply Change

+10.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,289/ct

10th Percentile

$633

Median

$1,289

90th Percentile

$2,768

Score Distribution

60 diamonds scored across 4 quality tiers

Excellent

20 (33.3%)

Very Good

6 (10.0%)

Good

32 (53.3%)

Average

2 (3.3%)

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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