How much does a 5.00ct+ G IF lab grown marquise diamond cost?

As of October 2026, 5.00ct+ G IF lab grown marquise diamonds typically cost $16,065 AUD to $16,065 AUD, with a median price of $16,065 AUD. There are currently 1 diamonds matching this specification available across retailers.

Where can I find the best price on a G IF marquise diamond?

About 36% of these diamonds are available at multiple retailers, with an average price spread of 72%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ G IF Lab Grown Marquise

Quick answer

As of October 2026, there are 1 lab grown marquise diamonds with G colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $16,065 AUD to $16,065 AUD, with a median of $16,065 AUD. At least 34 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 72%. Half of all listings fall between $2,329 AUD and $4,801 AUD per carat. Over the last 30 days the median price moved -1.5% and the number of listings moved +1.4%.

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

5.25ct Marquise G IF, IGI, grade A, from $16,065 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. Marquise lab grown stones in the index: 485 USD per carat, -3.2% 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

$16,065 AUD

Highest Price

$71,977 AUD

Average Price

$16,065 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

35.7%

Price Spread

72.2%

30-Day Price Trend

-1.5%

30-Day Supply Change

+1.4%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$2,407/ct

10th Percentile

$1,230

Median

$2,407

90th Percentile

$5,828

Score Distribution

1 diamonds scored across 1 quality tiers

Excellent

1 (100.0%)

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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