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 $351 USD to $1,660 USD, with a median price of $779 USD. There are currently 313 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 313 lab grown marquise diamonds with G color and VS1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $351 USD to $1,660 USD, with a median of $779 USD. At least 56 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 $342 USD and $706 USD per carat. The same specification in natural form lists at a median of about $10,457 USD per carat. Over the last 30 days the median price moved +39.5% and the number of listings moved -14.2%.

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

313

Lowest Price

$209 USD

Highest Price

$2,965 USD

Average Price

$928 USD

Market Intelligence

Retailers Selling

Cross Retailer %

37.9%

Price Spread

63.7%

30-Day Price Trend

+39.5%

30-Day Supply Change

-14.2%

Volatility (30d)

0.16

Price Range

Price per carat distribution across retailers

$571/ct

10th Percentile

$203

Median

$571

90th Percentile

$891

Score Distribution

866 diamonds scored across 4 quality tiers

Excellent

134 (15.5%)

Very Good

98 (11.3%)

Good

354 (40.9%)

Average

280 (32.3%)

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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