I designed a ring you can keep forever and just change the stone from it.
So here is the main support, the ring itself. I choose the middle made out of platinum and blue marble.
Here is one example of possible accessory. The screw part is made out of titanium and the rock is amethyst.
Here both of there fit together.
With this idea you can build an infinite amount of Main Frame Ring and Accessory Ring.
Isn’t it cool ?!