How much does a 1.00 to 1.49ct G VS1 lab grown round diamond cost?

As of October 2026, 1.00 to 1.49ct G VS1 lab grown round diamonds typically cost £125 GBP to £627 GBP, with a median price of £279 GBP. There are currently 1,842 diamonds matching this specification available across retailers.

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

About 49% of these diamonds are available at multiple retailers, with an average price spread of 87%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct G VS1 Lab Grown Round

Quick answer

As of October 2026, there are 1,842 lab grown round diamonds with G colour and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £125 GBP to £627 GBP, with a median of £279 GBP. At least 49 retailers stock this exact specification, and 49% of the stones appear at more than one of them, with an average price spread of 87%. Half of all listings fall between £190 GBP and £430 GBP per carat. The same specification in natural form lists at a median of about £4,124 GBP per carat. Over the last 30 days the median price moved +2.2% and the number of listings moved -15.8%.

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

1,842

Lowest Price

£94 GBP

Highest Price

£1,485 GBP

Average Price

£356 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

49.4%

Price Spread

87.5%

30-Day Price Trend

+2.2%

30-Day Supply Change

-15.8%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$369/ct

10th Percentile

$171

Median

$369

90th Percentile

$802

Score Distribution

3.7K diamonds scored across 4 quality tiers

Excellent

1,416 (38.6%)

Very Good

378 (10.3%)

Good

782 (21.3%)

Average

1,088 (29.7%)

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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