How much does a 5.00ct+ G VS1 lab grown round diamond cost?

As of October 2026, 5.00ct+ G VS1 lab grown round diamonds typically cost £604 GBP to £7,391 GBP, with a median price of £1,437 GBP. There are currently 1,112 diamonds matching this specification available across retailers.

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

About 54% of these diamonds are available at multiple retailers, with an average price spread of 94%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ G VS1 Lab Grown Round

Quick answer

As of October 2026, there are 1,112 lab grown round diamonds with G colour and VS1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £604 GBP to £7,391 GBP, with a median of £1,437 GBP. At least 45 retailers stock this exact specification, and 54% of the stones appear at more than one of them, with an average price spread of 94%. Half of all listings fall between £243 GBP and £610 GBP per carat. The same specification in natural form lists at a median of about £34,729 GBP per carat. Over the last 30 days the median price moved -10.3% and the number of listings moved +22.7%.

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. Round lab grown stones in the index: 414 USD per carat, -5.0% 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

1,112

Lowest Price

£401 GBP

Highest Price

£76,499 GBP

Average Price

£3,366 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

54.0%

Price Spread

94.2%

30-Day Price Trend

-10.3%

30-Day Supply Change

+22.7%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$522/ct

10th Percentile

$244

Median

$522

90th Percentile

$1,316

Score Distribution

2.0K diamonds scored across 4 quality tiers

Excellent

900 (45.5%)

Very Good

299 (15.1%)

Good

398 (20.1%)

Average

383 (19.3%)

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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