@scrappydog1958 I use Rhino 5 and Sub-d (T-Splines) for all my jewellery. I paid for Rhinogold 4 way back…but very rarely use any of it’s tools. Mainly only use the gem/materials library now.
For placing gems and claws etc on surfaces I use Jarek`s Orient Object on Object.
For distributing objects I use Pascal`s script.
If you want some thing more like Matrix then perhaps you could look at this new software. I believe the brother of the creator of Rhinogold is developing it. I stumbled across it on the website of the Rhino reseller that I got my copy from way back. No idea if it is any good…but cheaper than Matrix.