How to model such a pendant?

Hi friends,
I downloaded this pendant from I want to model such a pendant by myself. How is it possible to array those rings over the shape like that?
What is the procedure? What commands are needed?
Please guide me.

Natively in rhino will be difficult to do this quickly, if you have acces to jewelry plugin, you’ll have pave tools such like this :

You can also look at Circle packing in grasshopper

@Jarek also made a Circle packing tools, may be that can be flowed on surface ( i remember that work only on planar surface )

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Cool design! That pendant would be difficult to cast and clean/polish.