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

As of October 2026, 1.50 to 1.99ct G VS1 lab grown cushion diamonds typically cost £204 GBP to £977 GBP, with a median price of £508 GBP. There are currently 1,095 diamonds matching this specification available across retailers.

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

About 27% of these diamonds are available at multiple retailers, with an average price spread of 81%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct G VS1 Lab Grown Cushion

Quick answer

As of October 2026, there are 1,095 lab grown cushion diamonds with G colour and VS1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run £204 GBP to £977 GBP, with a median of £508 GBP. At least 62 retailers stock this exact specification, and 27% of the stones appear at more than one of them, with an average price spread of 81%. Half of all listings fall between £249 GBP and £541 GBP per carat. The same specification in natural form lists at a median of about £4,877 GBP per carat. Over the last 30 days the median price moved +12.2% and the number of listings moved +7.3%.

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. Cushion lab grown stones in the index: 516 USD per carat, +6.9% 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

1,095

Lowest Price

£155 GBP

Highest Price

£2,674 GBP

Average Price

£559 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

27.0%

Price Spread

81.1%

30-Day Price Trend

+12.2%

30-Day Supply Change

+7.3%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$478/ct

10th Percentile

$245

Median

$478

90th Percentile

$1,012

Score Distribution

3.0K diamonds scored across 4 quality tiers

Excellent

679 (23.0%)

Very Good

575 (19.5%)

Good

755 (25.6%)

Average

943 (31.9%)

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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