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

As of October 2026, 3.00 to 4.99ct G VS1 lab grown round diamonds typically cost £404 GBP to £2,356 GBP, with a median price of £1,079 GBP. There are currently 3,261 diamonds matching this specification available across retailers.

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

About 40% of these diamonds are available at multiple retailers, with an average price spread of 92%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G VS1 Lab Grown Round

Quick answer

As of October 2026, there are 3,261 lab grown round diamonds with G colour and VS1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £404 GBP to £2,356 GBP, with a median of £1,079 GBP. At least 60 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 92%. Half of all listings fall between £182 GBP and £458 GBP per carat. The same specification in natural form lists at a median of about £17,813 GBP per carat. Over the last 30 days the median price moved +8.1% and the number of listings moved +12.5%.

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

3,261

Lowest Price

£254 GBP

Highest Price

£5,969 GBP

Average Price

£1,242 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

40.5%

Price Spread

91.6%

30-Day Price Trend

+8.1%

30-Day Supply Change

+12.5%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$401/ct

10th Percentile

$162

Median

$401

90th Percentile

$795

Score Distribution

9.9K diamonds scored across 4 quality tiers

Excellent

2,241 (22.6%)

Very Good

1,168 (11.8%)

Good

1,302 (13.1%)

Average

5,209 (52.5%)

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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