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

As of October 2026, 5.00ct+ F SI1 lab grown asscher diamonds typically cost £753 GBP to £5,029 GBP, with a median price of £1,503 GBP. There are currently 8 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 57%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ F SI1 Lab Grown Asscher

Quick answer

As of October 2026, there are 8 lab grown asscher diamonds with F colour and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £753 GBP to £5,029 GBP, with a median of £1,503 GBP. At least 12 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 57%. Half of all listings fall between £222 GBP and £413 GBP per carat.

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. Asscher lab grown stones in the index: 470 USD per carat, -4.3% 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

Lowest Price

£721 GBP

Highest Price

£11,204 GBP

Average Price

£2,266 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

38.5%

Price Spread

57.1%

Price Range

Price per carat distribution across retailers

$446/ct

10th Percentile

$234

Median

$446

90th Percentile

$795

Score Distribution

13 diamonds scored across 3 quality tiers

Excellent

7 (53.8%)

Good

5 (38.5%)

Average

1 (7.7%)

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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