Thank you Pilou, yes I see that now. This would work well for an actual gemstone as it can't be deformed. In my case, I plan on using enamel to fill the recesses in the ring so actually, Flow works better.
I'm learning every day, thanks to all of you!

Hi Gunter,
you do not need to select all your objects only one (the red one) as shown the in my illustration.
I have attached my drawing to help.
I have shown the centres as circles just for reference.
1) run ArrayGem
2) select in browser Gem and in ArrayGem done.
3) select in browser Points then Ring and in ArrayGem done.
This will place the gems on the points orientated to the ring surface.
You can adjust the depth by moving the circle position.
Hope this helps
Cheers
Barry

If you use Vclone you can have different sizes in the same time! ;)

That's brilliant Barry, thank you very much!
Gunter

Thank you Pilou, very helpful as always!
Gunter

Michael has repaired the _VSeed shown above!
http://moi3d.com/forum/index.php?webtag=MOI&msg=11471.23

https://moi3d.com/download/scripts/max/vSeed.v.1.3.2024.07.16.zip
Put the 2 files unzipped on the Moi commands folder

No more error message!

Brilliant, thank you so much Pilou!
Gunter