Wearable Arc Reactor / Stargate

A set of two parts: a ring and token that can be interlocked with a garment in between, allowing them to hang on clothing and look awesome. Two types.

My brother printed a couple of circles to test clearance for another project and I stuck them through my shirt. There was a gap tight enough that it stayed and I thought it was a cool effect.
I designed my own and it eventually morphed into a neat ring that reminded me of the famous Stark Reactor (or a Stargate, whichever you prefer).
After a