Amethyst White Gold Ring Can I Wear My Ring On My Ring Finger On My Right Hand?

Can I wear my ring on my ring finger on my right hand? - amethyst white gold ring

I call my grandmother 16a. It is with a square white gold amethyst diamond. It is wrong to use it in the ring right? Did not match any other finger.
If I want to the hand / finger Does she go?
I know I have to worry what others think, but I just want to know what culturely (was) a word, the correction