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

As of October 2026, 5.00ct+ H IF lab grown round diamonds typically cost £2,277 GBP to £323,566 GBP, with a median price of £3,554 GBP. There are currently 3 diamonds matching this specification available across retailers.

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

About 57% of these diamonds are available at multiple retailers, with an average price spread of 93%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ H IF Lab Grown Round

Quick answer

As of October 2026, there are 3 lab grown round diamonds with H colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £2,277 GBP to £323,566 GBP, with a median of £3,554 GBP. At least 24 retailers stock this exact specification, and 57% of the stones appear at more than one of them, with an average price spread of 93%. Half of all listings fall between £572 GBP and £1,275 GBP per carat. The same specification in natural form lists at a median of about £17,277 GBP per carat. Over the last 30 days the median price moved +3.6% and the number of listings moved +12.7%.

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

£2,173 GBP

Highest Price

£642,407 GBP

Average Price

£109,799 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

57.1%

Price Spread

93.2%

30-Day Price Trend

+3.6%

30-Day Supply Change

+12.7%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$1,010/ct

10th Percentile

$676

Median

$1,010

90th Percentile

$2,358

Score Distribution

6 diamonds scored across 3 quality tiers

Excellent

3 (50.0%)

Very Good

1 (16.7%)

Good

2 (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