How much does a 1.50 to 1.99ct G VS1 lab grown marquise diamond cost?

As of October 2026, 1.50 to 1.99ct G VS1 lab grown marquise diamonds typically cost $469 AUD to $2,361 AUD, with a median price of $1,113 AUD. There are currently 270 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 64%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct G VS1 Lab Grown Marquise

Quick answer

As of October 2026, there are 270 lab grown marquise diamonds with G colour and VS1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $469 AUD to $2,361 AUD, with a median of $1,113 AUD. At least 57 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 64%. Half of all listings fall between $485 AUD and $1,009 AUD per carat. The same specification in natural form lists at a median of about $14,853 AUD per carat. Over the last 30 days the median price moved +40.8% and the number of listings moved -11.5%.

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: October 2026

Available

270

Lowest Price

$306 AUD

Highest Price

$4,221 AUD

Average Price

$1,320 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

37.8%

Price Spread

63.7%

30-Day Price Trend

+40.8%

30-Day Supply Change

-11.5%

Volatility (30d)

0.15

Price Range

Price per carat distribution across retailers

$577/ct

10th Percentile

$201

Median

$577

90th Percentile

$891

Score Distribution

735 diamonds scored across 4 quality tiers

Excellent

115 (15.6%)

Very Good

60 (8.2%)

Good

338 (46.0%)

Average

222 (30.2%)

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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