How much does a 0.75 to 0.99ct D IF lab grown radiant diamond cost?

As of October 2026, 0.75 to 0.99ct D IF lab grown radiant diamonds typically cost £147 GBP to £652 GBP, with a median price of £238 GBP. There are currently 139 diamonds matching this specification available across retailers.

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

About 54% of these diamonds are available at multiple retailers, with an average price spread of 107%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct D IF Lab Grown Radiant

Quick answer

As of October 2026, there are 139 lab grown radiant diamonds with D colour and IF clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run £147 GBP to £652 GBP, with a median of £238 GBP. At least 46 retailers stock this exact specification, and 54% of the stones appear at more than one of them, with an average price spread of 107%. Half of all listings fall between £307 GBP and £854 GBP per carat. The same specification in natural form lists at a median of about £3,155 GBP per carat. Over the last 30 days the median price moved -9.2% and the number of listings moved +29.1%.

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

139

Lowest Price

£118 GBP

Highest Price

£2,012 GBP

Average Price

£364 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

53.6%

Price Spread

106.8%

30-Day Price Trend

-9.2%

30-Day Supply Change

+29.1%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$682/ct

10th Percentile

$279

Median

$682

90th Percentile

$1,571

Score Distribution

308 diamonds scored across 5 quality tiers

Exceptional

11 (3.6%)

Excellent

151 (49.0%)

Very Good

56 (18.2%)

Good

59 (19.2%)

Average

31 (10.1%)

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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