How much does a 0.50 to 0.74ct D FL lab grown round diamond cost?

As of October 2026, 0.50 to 0.74ct D FL lab grown round diamonds typically cost £110 GBP to £422 GBP, with a median price of £203 GBP. There are currently 1,438 diamonds matching this specification available across retailers.

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

About 61% of these diamonds are available at multiple retailers, with an average price spread of 80%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct D FL Lab Grown Round

Quick answer

As of October 2026, there are 1,438 lab grown round diamonds with D colour and FL clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run £110 GBP to £422 GBP, with a median of £203 GBP. At least 36 retailers stock this exact specification, and 61% of the stones appear at more than one of them, with an average price spread of 80%. Half of all listings fall between £392 GBP and £817 GBP per carat. The same specification in natural form lists at a median of about £3,460 GBP per carat. Over the last 30 days the median price moved -4.5% and the number of listings moved +2.0%.

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

1,438

Lowest Price

£85 GBP

Highest Price

£1,398 GBP

Average Price

£228 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

60.8%

Price Spread

80.0%

30-Day Price Trend

-4.5%

30-Day Supply Change

+2.0%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$707/ct

10th Percentile

$300

Median

$707

90th Percentile

$1,508

Score Distribution

2.4K diamonds scored across 5 quality tiers

Exceptional

73 (3.0%)

Excellent

1,317 (53.8%)

Very Good

624 (25.5%)

Good

377 (15.4%)

Average

55 (2.2%)

Find Your Diamond

Search 1,438 D FL round diamonds and compare prices.

Search Diamonds

Consider Instead

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

D IFIF inclusions are not visible without magnification

Save 10%

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