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

As of October 2026, 5.00ct+ H SI1 lab grown asscher diamonds typically cost £1,792 GBP to £2,536 GBP, with a median price of £2,357 GBP. There are currently 8 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

5.00ct+ H SI1 Lab Grown Asscher

Quick answer

As of October 2026, there are 8 lab grown asscher diamonds with H colour and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £1,792 GBP to £2,536 GBP, with a median of £2,357 GBP.

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

£576 GBP

Highest Price

£26,615 GBP

Average Price

£2,180 GBP

Score Distribution

8 diamonds scored across 2 quality tiers

Excellent

7 (87.5%)

Very Good

1 (12.5%)

Find Your Diamond

Search 8 H SI1 asscher 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