How much does a 0.50 to 0.74ct J IF lab grown round diamond cost?

As of October 2026, 0.50 to 0.74ct J IF lab grown round diamonds typically cost $679 AUD to $851 AUD, with a median price of $783 AUD. There are currently 1 diamonds matching this specification available across retailers.

Where can I find the best price on a J IF round diamond?

About 9% of these diamonds are available at multiple retailers, with an average price spread of 21%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct J IF Lab Grown Round

Quick answer

As of October 2026, there are 1 lab grown round diamonds with J colour and IF clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $679 AUD to $851 AUD, with a median of $783 AUD. At least 11 retailers stock this exact specification, and 9% of the stones appear at more than one of them, with an average price spread of 21%. Half of all listings fall between $1,514 AUD and $1,853 AUD per carat. The same specification in natural form lists at a median of about $2,016 AUD per carat.

Three of the best scored stones at this specification right now:

0.50ct Round J IF, IGI, grade A, from $653 AUD

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. Round lab grown stones in the index: 414 USD per carat, -5.0% 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

$653 AUD

Highest Price

$1,178 AUD

Average Price

$768 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

8.7%

Price Spread

21.0%

Price Range

Price per carat distribution across retailers

$1,135/ct

10th Percentile

$972

Median

$1,135

90th Percentile

$1,768

Score Distribution

3 diamonds scored across 2 quality tiers

Excellent

1 (33.3%)

Very Good

2 (66.7%)

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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