How much does a 3.00 to 4.99ct I SI2 lab grown heart diamond cost?

As of November 2026, 3.00 to 4.99ct I SI2 lab grown heart diamonds typically cost £8,913 GBP to £10,057 GBP, with a median price of £9,322 GBP. There are currently 2 diamonds matching this specification available across retailers.

Where can I find the best price on a I SI2 heart diamond?

Compare prices across retailers on Carat Hunter to see all your options.

3.00 to 4.99ct I SI2 Lab Grown Heart

Last updated: November 2026

Available

Lowest Price

£8,811 GBP

Highest Price

£10,240 GBP

Average Price

£9,458 GBP

Score Distribution

3 diamonds scored across 1 quality tiers

Average

3 (100.0%)

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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