How much does a 0.50 to 0.74ct G VS1 lab grown marquise diamond cost?

As of November 2026, 0.50 to 0.74ct G VS1 lab grown marquise diamonds typically cost $235 NZD to $1,288 NZD, with a median price of $710 NZD. There are currently 165 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 82%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct G VS1 Lab Grown Marquise

Quick answer

As of November 2026, there are 165 lab grown marquise diamonds with G colour and VS1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $235 NZD to $1,288 NZD, with a median of $710 NZD. At least 35 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 82%. Half of all listings fall between $647 NZD and $1,574 NZD per carat. The same specification in natural form lists at a median of about $3,879 NZD per carat. Over the last 30 days the median price moved +2.4% and the number of listings moved -2.7%.

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

165

Lowest Price

$176 NZD

Highest Price

$3,424 NZD

Average Price

$768 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

37.8%

Price Spread

81.6%

30-Day Price Trend

+2.4%

30-Day Supply Change

-2.7%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$640/ct

10th Percentile

$265

Median

$640

90th Percentile

$1,404

Score Distribution

203 diamonds scored across 4 quality tiers

Excellent

43 (21.2%)

Very Good

14 (6.9%)

Good

93 (45.8%)

Average

53 (26.1%)

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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