How much does a 5.00ct+ I IF lab grown oval diamond cost?

As of October 2026, 5.00ct+ I IF lab grown oval diamonds typically cost £1,853 GBP to £14,445 GBP, with a median price of £7,111 GBP. There are currently 2 diamonds matching this specification available across retailers.

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

About 78% of these diamonds are available at multiple retailers, with an average price spread of 55%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ I IF Lab Grown Oval

Quick answer

As of October 2026, there are 2 lab grown oval diamonds with I colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £1,853 GBP to £14,445 GBP, with a median of £7,111 GBP. At least 24 retailers stock this exact specification, and 78% of the stones appear at more than one of them, with an average price spread of 55%. Half of all listings fall between £1,062 GBP and £1,739 GBP per carat. The same specification in natural form lists at a median of about £12,487 GBP per carat. Over the last 30 days the median price moved -13.9% and the number of listings moved +32.9%.

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. Oval lab grown stones in the index: 453 USD per carat, -7.4% 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

£1,668 GBP

Highest Price

£36,705 GBP

Average Price

£7,514 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

77.8%

Price Spread

55.2%

30-Day Price Trend

-13.9%

30-Day Supply Change

+32.9%

Volatility (30d)

0.07

Price Range

Price per carat distribution across retailers

$1,633/ct

10th Percentile

$1,179

Median

$1,633

90th Percentile

$3,029

Score Distribution

5 diamonds scored across 3 quality tiers

Excellent

3 (60.0%)

Very Good

1 (20.0%)

Average

1 (20.0%)

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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