Fastest way to create prongs/claws?

Hello everyone,

I have come across a variety lot of different gemstones (they are either round/oval or rectangular). They are ALL of different sizes (have different length and width).

What is the fastest way to output a prong/claw? Input should preferably a curve (i will trace around the picture at true scale) OR can also input length/width.

Thank you!

My guess this is one of the tools the Jewelry plug-ins add.
I have nothing todo with jewelry modeling, but that sort of tool seems like an obvious need.

You may explain a little more what is your intent :

  • Stick to Rhino features to output those object through a manual procedure
  • Ask for a plugin to automate the process