
The resin model serves a dual purpose, providing insights into the size and overall design of the ring, while also serving as a crucial validation to ensure a perfect fit for the stones within their respective settings.

Resin model from the shank view.

Resin models attached to a central sprue, forming a tree-like arrangement.

The red sprue functions as the channel for the molten platinum to access and fill the resin, creating the cast ring.