How much does a 1.00 to 1.49ct H IF lab grown radiant diamond cost?

As of October 2026, 1.00 to 1.49ct H IF lab grown radiant diamonds typically cost £688 GBP to £2,191 GBP, with a median price of £1,099 GBP. There are currently 4 diamonds matching this specification available across retailers.

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

About 50% of these diamonds are available at multiple retailers, with an average price spread of 82%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct H IF Lab Grown Radiant

Quick answer

As of October 2026, there are 4 lab grown radiant diamonds with H colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £688 GBP to £2,191 GBP, with a median of £1,099 GBP. At least 22 retailers stock this exact specification, and 50% of the stones appear at more than one of them, with an average price spread of 82%. Half of all listings fall between £544 GBP and £1,282 GBP per carat. The same specification in natural form lists at a median of about £2,973 GBP per carat.

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. Radiant lab grown stones in the index: 474 USD per carat, -2.1% 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

£315 GBP

Highest Price

£6,308 GBP

Average Price

£1,306 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

50.0%

Price Spread

81.6%

Price Range

Price per carat distribution across retailers

$1,205/ct

10th Percentile

$583

Median

$1,205

90th Percentile

$2,351

Score Distribution

10 diamonds scored across 4 quality tiers

Excellent

3 (30.0%)

Very Good

2 (20.0%)

Good

4 (40.0%)

Average

1 (10.0%)

Find Your Diamond

Search 4 H IF radiant diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

H VVS1VVS1 inclusions are not visible without magnification

Save 50%

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