How much does a 3.00 to 4.99ct G FL natural round diamond cost?

As of October 2026, 3.00 to 4.99ct G FL natural round diamonds typically cost £52,752 GBP to £70,194 GBP, with a median price of £61,935 GBP. There are currently 2 diamonds matching this specification available across retailers.

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

About 20% of these diamonds are available at multiple retailers, with an average price spread of 21%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G FL Natural Round

Quick answer

As of October 2026, there are 2 natural round diamonds with G colour and FL clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £52,752 GBP to £70,194 GBP, with a median of £61,935 GBP. At least 10 retailers stock this exact specification, and 20% of the stones appear at more than one of them, with an average price spread of 21%. Half of all listings fall between £17,218 GBP and £21,355 GBP per carat. The same specification in lab grown form lists at a median of about £1,002 GBP per carat. Over the last 30 days the median price moved -1.4% and the number of listings moved -5.7%.

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 natural stones in the index: 2,248 USD per carat, +7.6% 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

Lowest Price

£50,456 GBP

Highest Price

£89,140 GBP

Average Price

£61,550 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

20.0%

Price Spread

21.5%

30-Day Price Trend

-1.4%

30-Day Supply Change

-5.7%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$25,660/ct

10th Percentile

$20,143

Median

$25,660

90th Percentile

$30,287

Score Distribution

3 diamonds scored across 2 quality tiers

Excellent

2 (66.7%)

Good

1 (33.3%)

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H FLH colour is visually identical to G to the naked eye

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Lab-Grown G FLSame specifications, lab-grown origin

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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