So why not take some of the pressure off and just 3D-print the thing ... making iterative design changes in Fusion 360, and having a prototype ring SLA printed by a friend. That allowed him ...

Photoshop CS6 Extended tutorial showing how to make interlocking, 3D gold rings from scratch. If 3D isn't working: Only available in EXTENDED versions. Windows XP doesn't support 3D. Video card ...