How much does a 0.50 to 0.74ct D IF lab grown heart diamond cost?

As of October 2026, 0.50 to 0.74ct D IF lab grown heart diamonds typically cost $359 NZD to $1,842 NZD, with a median price of $570 NZD. There are currently 51 diamonds matching this specification available across retailers.

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

About 67% of these diamonds are available at multiple retailers, with an average price spread of 115%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct D IF Lab Grown Heart

Quick answer

As of October 2026, there are 51 lab grown heart diamonds with D colour and IF clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $359 NZD to $1,842 NZD, with a median of $570 NZD. At least 31 retailers stock this exact specification, and 67% of the stones appear at more than one of them, with an average price spread of 115%. Half of all listings fall between $798 NZD and $2,434 NZD per carat. The same specification in natural form lists at a median of about $3,988 NZD per carat. Over the last 30 days the median price moved -14.6% and the number of listings moved +71.4%.

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. Heart lab grown stones in the index: 421 USD per carat, -1.8% 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

$337 NZD

Highest Price

$4,965 NZD

Average Price

$854 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

67.4%

Price Spread

115.2%

30-Day Price Trend

-14.6%

30-Day Supply Change

+71.4%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$798/ct

10th Percentile

$379

Median

$798

90th Percentile

$1,849

Score Distribution

107 diamonds scored across 5 quality tiers

Exceptional

2 (1.9%)

Excellent

59 (55.1%)

Very Good

11 (10.3%)

Good

19 (17.8%)

Average

16 (15.0%)

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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