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

As of September 2026, 1.00 to 1.49ct G FL lab grown round diamonds typically cost £272 GBP to £1,379 GBP, with a median price of £379 GBP. There are currently 3 diamonds matching this specification available across retailers.

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1.00 to 1.49ct G FL Lab Grown Round

Quick answer

As of September 2026, there are 3 lab grown round diamonds with G colour and FL clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £272 GBP to £1,379 GBP, with a median of £379 GBP. At least 24 retailers stock this exact specification. Half of all listings fall between £317 GBP and £801 GBP per carat. The same specification in natural form lists at a median of about £6,468 GBP per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Round lab grown stones in the index: 438 USD per carat, -14.1% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

£246 GBP

Highest Price

£1,629 GBP

Average Price

£751 GBP

Market Intelligence

Retailers Selling

Price Spread

111.1%

Price Range

Price per carat distribution across retailers

$589/ct

10th Percentile

$285

Median

$589

90th Percentile

$2,034

Score Distribution

3 diamonds scored across 2 quality tiers

Excellent

2 (66.7%)

Average

1 (33.3%)

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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