How much does a 1.00 to 1.49ct D IF lab grown heart diamond cost?

As of September 2026, 1.00 to 1.49ct D IF lab grown heart diamonds typically cost £149 GBP to £1,082 GBP, with a median price of £374 GBP. There are currently 732 diamonds matching this specification available across retailers.

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1.00 to 1.49ct D IF Lab Grown Heart

Quick answer

As of September 2026, there are 732 lab grown heart diamonds with D colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £149 GBP to £1,082 GBP, with a median of £374 GBP. At least 36 retailers stock this exact specification. Half of all listings fall between £358 GBP and £782 GBP per carat. The same specification in natural form lists at a median of about £4,699 GBP per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Heart lab grown stones in the index: 440 USD per carat, -9.4% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

732

Lowest Price

£125 GBP

Highest Price

£3,957 GBP

Average Price

£513 GBP

Market Intelligence

Retailers Selling

Price Spread

92.4%

Price Range

Price per carat distribution across retailers

$620/ct

10th Percentile

$373

Median

$620

90th Percentile

$1,606

Score Distribution

732 diamonds scored across 5 quality tiers

Exceptional

5 (0.7%)

Excellent

260 (35.5%)

Very Good

274 (37.4%)

Good

86 (11.7%)

Average

107 (14.6%)

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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