How much does a 3.00 to 4.99ct G FL lab grown oval diamond cost?

As of September 2026, 3.00 to 4.99ct G FL lab grown oval diamonds typically cost £9,674 GBP to £33,930 GBP, with a median price of £11,488 GBP. There are currently 3 diamonds matching this specification available across retailers.

Where can I find the best price on a G FL oval diamond?

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3.00 to 4.99ct G FL Lab Grown Oval

Quick answer

As of September 2026, there are 3 lab grown oval diamonds with G colour and FL clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £9,674 GBP to £33,930 GBP, with a median of £11,488 GBP. At least 22 retailers stock this exact specification. Half of all listings fall between £879 GBP and £2,140 GBP per carat. The same specification in natural form lists at a median of about £16,133 GBP per carat.

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

3.92ct Oval G FL, GIA, score 63 of 100, from £11,488 GBP

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. Oval lab grown stones in the index: 487 USD per carat, -11.2% 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

£9,220 GBP

Highest Price

£39,541 GBP

Average Price

£20,083 GBP

Market Intelligence

Retailers Selling

Price Spread

128.8%

Price Range

Price per carat distribution across retailers

$1,243/ct

10th Percentile

$883

Median

$1,243

90th Percentile

$3,741

Score Distribution

3 diamonds scored across 2 quality tiers

Good

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