Hi, I'm Adiet.
I am a jewelry designer with many experiences.
I use Rhinoceros to make a jewelry design.
About you project, I can help you to add the stone.
I want to ask, is the rock you are using a NURBs or a mesh model?
I can help you with Rhino 5 and Rhino 6.
However, for RhinoGold, I don't think it's difficult because there are tools that help it.
Please contact me if you want to confirm in advance.
If you don't like it, that's okay
Looking forward to your reply.
Thank you,
ADIET