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

As of October 2026, 3.00 to 4.99ct G IF lab grown round diamonds typically cost £527 GBP to £6,743 GBP, with a median price of £1,410 GBP. There are currently 26 diamonds matching this specification available across retailers.

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

About 41% of these diamonds are available at multiple retailers, with an average price spread of 105%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G IF Lab Grown Round

Quick answer

As of October 2026, there are 26 lab grown round diamonds with G colour and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £527 GBP to £6,743 GBP, with a median of £1,410 GBP. At least 45 retailers stock this exact specification, and 41% of the stones appear at more than one of them, with an average price spread of 105%. Half of all listings fall between £251 GBP and £714 GBP per carat. The same specification in natural form lists at a median of about £19,096 GBP per carat. Over the last 30 days the median price moved -8.4% and the number of listings moved +20.7%.

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 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

Lowest Price

£410 GBP

Highest Price

£16,799 GBP

Average Price

£2,503 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

40.9%

Price Spread

104.7%

30-Day Price Trend

-8.4%

30-Day Supply Change

+20.7%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$593/ct

10th Percentile

$248

Median

$593

90th Percentile

$1,773

Score Distribution

59 diamonds scored across 4 quality tiers

Excellent

29 (49.2%)

Very Good

11 (18.6%)

Good

5 (8.5%)

Average

14 (23.7%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

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

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G VVS1VVS1 inclusions are not visible without magnification

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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