Remix of the original. Now a two part print with the T-Bar more in the middle and with a slightly deeper base. Should balance better for heavier jewelry. You can either pressure fit the T-Bar into the base or use some adhesive - there's a gap between the base and the bottom of the T-Bar that inserts so lots of room for some hot glue or something similar.
I printed the base face down with supports for the T-Bar socket. This gives a perfect finish when assembled.
The author remixed this model.