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

As of October 2026, 1.00 to 1.49ct D IF lab grown round diamonds typically cost £167 GBP to £1,213 GBP, with a median price of £375 GBP. There are currently 4,989 diamonds matching this specification available across retailers.

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

About 47% of these diamonds are available at multiple retailers, with an average price spread of 106%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct D IF Lab Grown Round

Quick answer

As of October 2026, there are 4,989 lab grown round diamonds with D colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £167 GBP to £1,213 GBP, with a median of £375 GBP. At least 55 retailers stock this exact specification, and 47% of the stones appear at more than one of them, with an average price spread of 106%. Half of all listings fall between £267 GBP and £684 GBP per carat. The same specification in natural form lists at a median of about £8,034 GBP per carat. Over the last 30 days the median price moved -3.5% and the number of listings moved +23.0%.

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. Round lab grown stones in the index: 414 USD per carat, -5.0% 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

4,989

Lowest Price

£143 GBP

Highest Price

£4,288 GBP

Average Price

£533 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

47.2%

Price Spread

105.6%

30-Day Price Trend

-3.5%

30-Day Supply Change

+23.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$526/ct

10th Percentile

$231

Median

$526

90th Percentile

$1,215

Score Distribution

10.0K diamonds scored across 5 quality tiers

Exceptional

178 (1.8%)

Excellent

4,415 (44.3%)

Very Good

1,578 (15.8%)

Good

1,850 (18.6%)

Average

1,936 (19.4%)

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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