How much does a 5.00ct+ G VS1 lab grown marquise diamond cost?

As of November 2026, 5.00ct+ G VS1 lab grown marquise diamonds typically cost $1,157 AUD to $13,392 AUD, with a median price of $2,834 AUD. There are currently 504 diamonds matching this specification available across retailers.

Where can I find the best price on a G VS1 marquise diamond?

About 49% of these diamonds are available at multiple retailers, with an average price spread of 98%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ G VS1 Lab Grown Marquise

Quick answer

As of November 2026, there are 504 lab grown marquise diamonds with G colour and VS1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $1,157 AUD to $13,392 AUD, with a median of $2,834 AUD. At least 44 retailers stock this exact specification, and 49% of the stones appear at more than one of them, with an average price spread of 98%. Half of all listings fall between $367 AUD and $865 AUD per carat. The same specification in natural form lists at a median of about $56,306 AUD per carat. Over the last 30 days the median price moved -13.0% and the number of listings moved +29.9%.

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. 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: November 2026

Available

504

Lowest Price

$811 AUD

Highest Price

$56,545 AUD

Average Price

$5,200 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

48.7%

Price Spread

98.3%

30-Day Price Trend

-13.0%

30-Day Supply Change

+29.9%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$356/ct

10th Percentile

$182

Median

$356

90th Percentile

$960

Score Distribution

993 diamonds scored across 4 quality tiers

Excellent

367 (37.0%)

Very Good

181 (18.2%)

Good

156 (15.7%)

Average

289 (29.1%)

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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