How much does a 0.75 to 0.99ct D IF lab grown heart diamond cost?

As of October 2026, 0.75 to 0.99ct D IF lab grown heart diamonds typically cost $413 AUD to $2,368 AUD, with a median price of $968 AUD. There are currently 33 diamonds matching this specification available across retailers.

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

About 43% of these diamonds are available at multiple retailers, with an average price spread of 114%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct D IF Lab Grown Heart

Quick answer

As of October 2026, there are 33 lab grown heart diamonds with D colour and IF clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $413 AUD to $2,368 AUD, with a median of $968 AUD. At least 36 retailers stock this exact specification, and 43% of the stones appear at more than one of them, with an average price spread of 114%. Half of all listings fall between $678 AUD and $1,942 AUD per carat. The same specification in natural form lists at a median of about $4,853 AUD per carat. Over the last 30 days the median price moved -0.4% and the number of listings moved +65.8%.

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

$282 AUD

Highest Price

$5,025 AUD

Average Price

$1,232 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

42.6%

Price Spread

114.3%

30-Day Price Trend

-0.4%

30-Day Supply Change

+65.8%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$777/ct

10th Percentile

$332

Median

$777

90th Percentile

$1,932

Score Distribution

77 diamonds scored across 5 quality tiers

Exceptional

2 (2.6%)

Excellent

25 (32.5%)

Very Good

9 (11.7%)

Good

17 (22.1%)

Average

24 (31.2%)

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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