UK Facet Cutters' Guild

2020 Open Competition

Lockdown had one positive outcome. Unlike 2018 when I had to rush my Open Competition entry and 2019 when I was unable to enter for a number of reasons, 2020 gave me an opportunity to spend some time on my stone and had it not been for one very small error when polishing a crown facet I might have done better than I did (99.39%). This had to be corrected by revisiting adjacent facets (I thought I had got away with it!) and it is testament to the skill of the judge (see comments below) that he spotted this and a number of other very minor defects that I was unable to detect.

There were eight entries this year and the results were as follows:

Tim Smith 98.81% but x 1.02 for degree of difficulty as his submission was cut in fluorite. Total 100.79%. Congratulations to Tim on coming a worthy first.

Steve Sweetman 99.39%

Jim Clark 99.19%

Aleksander Zunic 99.01%

Ivan Williamson 95.76%

Mark Nuell 95.22%

Jim Finlayson 90.91%

Mike Hitchman 84.54%

Here is the deceptively simple looking competition design and a photo of my entry.

Here is my score sheet and and the Judge's comments.

I like the comment concerning "a world class level of skill" but must do better!!


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Available free to existing users and as a 30 day free trial. No vested interest but I recommend this. For GemCad users it takes some getting used to but, based on personal experience, is easier to get to grips with.

Here is the design shown above as resequenced, annotated and 'cut' in GCS and the resulting facet diagram.


Updated: Aug 29

The news page here was getting a bit unwieldy so time to blog.

New shoulder stone design for a bling ring my daughter has commissioned.

A simple but effective design and with cut corners easy to set