How much does a 3.00 to 4.99ct G VS1 lab grown marquise diamond cost?

As of September 2026, 3.00 to 4.99ct G VS1 lab grown marquise diamonds typically cost $605 USD to $4,260 USD, with a median price of $1,530 USD. There are currently 3,442 diamonds matching this specification available across retailers.

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

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3.00 to 4.99ct G VS1 Lab Grown Marquise

Quick answer

As of September 2026, there are 3,442 lab grown marquise diamonds with G color and VS1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $605 USD to $4,260 USD, with a median of $1,530 USD. At least 50 retailers stock this exact specification. Half of all listings fall between $299 USD and $760 USD per carat. The same specification in natural form lists at a median of about $23,330 USD per carat.

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

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Marquise lab grown stones in the index: 500 USD per carat, -14.7% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

3,442

Lowest Price

$295 USD

Highest Price

$48,725 USD

Average Price

$2,117 USD

Market Intelligence

Retailers Selling

Price Spread

103.6%

Price Range

Price per carat distribution across retailers

$445/ct

10th Percentile

$239

Median

$445

90th Percentile

$1,290

Score Distribution

3.4K diamonds scored across 4 quality tiers

Excellent

705 (20.5%)

Very Good

704 (20.5%)

Good

827 (24.0%)

Average

1,206 (35.0%)

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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