How much does a 1.00 to 1.49ct D FL lab grown radiant diamond cost?

As of October 2026, 1.00 to 1.49ct D FL lab grown radiant diamonds typically cost £179 GBP to £903 GBP, with a median price of £388 GBP. There are currently 467 diamonds matching this specification available across retailers.

Where can I find the best price on a D FL radiant diamond?

About 60% of these diamonds are available at multiple retailers, with an average price spread of 111%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct D FL Lab Grown Radiant

Quick answer

As of October 2026, there are 467 lab grown radiant diamonds with D colour and FL clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £179 GBP to £903 GBP, with a median of £388 GBP. At least 38 retailers stock this exact specification, and 60% of the stones appear at more than one of them, with an average price spread of 111%. Half of all listings fall between £334 GBP and £968 GBP per carat. The same specification in natural form lists at a median of about £5,652 GBP per carat. Over the last 30 days the median price moved -3.1% and the number of listings moved +26.6%.

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

467

Lowest Price

£144 GBP

Highest Price

£3,342 GBP

Average Price

£505 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

60.1%

Price Spread

110.9%

30-Day Price Trend

-3.1%

30-Day Supply Change

+26.6%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$761/ct

10th Percentile

$275

Median

$761

90th Percentile

$2,103

Score Distribution

988 diamonds scored across 5 quality tiers

Exceptional

34 (3.4%)

Excellent

514 (52.0%)

Very Good

71 (7.2%)

Good

350 (35.4%)

Average

19 (1.9%)

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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