How much does a 5.00ct+ G IF lab grown round diamond cost?

As of October 2026, 5.00ct+ G IF lab grown round diamonds typically cost £2,611 GBP to £12,026 GBP, with a median price of £5,343 GBP. There are currently 18 diamonds matching this specification available across retailers.

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

About 45% of these diamonds are available at multiple retailers, with an average price spread of 100%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ G IF Lab Grown Round

Quick answer

As of October 2026, there are 18 lab grown round diamonds with G colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £2,611 GBP to £12,026 GBP, with a median of £5,343 GBP. At least 39 retailers stock this exact specification, and 45% of the stones appear at more than one of them, with an average price spread of 100%. Half of all listings fall between £789 GBP and £1,907 GBP per carat. The same specification in natural form lists at a median of about £27,509 GBP per carat. Over the last 30 days the median price moved -13.6% and the number of listings moved +5.4%.

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

£2,273 GBP

Highest Price

£397,437 GBP

Average Price

£16,207 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

44.8%

Price Spread

99.5%

30-Day Price Trend

-13.6%

30-Day Supply Change

+5.4%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$1,506/ct

10th Percentile

$767

Median

$1,506

90th Percentile

$3,740

Score Distribution

39 diamonds scored across 4 quality tiers

Excellent

19 (48.7%)

Very Good

5 (12.8%)

Good

10 (25.6%)

Average

5 (12.8%)

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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

Save 33%

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