How much does a 1.00 to 1.49ct J IF lab grown cushion diamond cost?

As of June 2026, 1.00 to 1.49ct J IF lab grown cushion diamonds are available from £1,242 GBP to £3,981 GBP, with an average price of £2,335 GBP. There are currently 5 diamonds matching this specification available across retailers.

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

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

1.00 to 1.49ct J IF Lab Grown Cushion

Last updated: June 2026

Available

Lowest Price

£1,242 GBP

Highest Price

£3,981 GBP

Average Price

£2,335 GBP

Score Distribution

5 diamonds scored across 1 quality tiers

Average

5 (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