How much does a 5.00ct+ F SI1 lab grown radiant diamond cost?

As of November 2026, 5.00ct+ F SI1 lab grown radiant diamonds typically cost €538 EUR to €3,553 EUR, with a median price of €1,363 EUR. There are currently 45 diamonds matching this specification available across retailers.

Where can I find the best price on a F SI1 radiant diamond?

About 60% of these diamonds are available at multiple retailers, with an average price spread of 84%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ F SI1 Lab Grown Radiant

Quick answer

As of November 2026, there are 45 lab grown radiant diamonds with F color and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run €538 EUR to €3,553 EUR, with a median of €1,363 EUR. At least 10 retailers stock this exact specification, and 60% of the stones appear at more than one of them, with an average price spread of 84%. Half of all listings fall between €199 EUR and €391 EUR per carat. Over the last 30 days the median price moved -2.9% and the number of listings moved +84.1%.

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: November 2026

Available

Lowest Price

€427 EUR

Highest Price

€9,679 EUR

Average Price

€1,821 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

60.0%

Price Spread

83.6%

30-Day Price Trend

-2.9%

30-Day Supply Change

+84.1%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$257/ct

10th Percentile

$199

Median

$257

90th Percentile

$515

Score Distribution

76 diamonds scored across 4 quality tiers

Excellent

26 (34.2%)

Very Good

14 (18.4%)

Good

16 (21.1%)

Average

20 (26.3%)

Find Your Diamond

Search 45 F SI1 radiant diamonds and compare prices.

Search Diamonds

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