A particular transformation

As you hold the Medallion you start to compare it to a ring of one of your friends who helped you moving. You take one of the rings and hold and feel like you should try it, even though it obviously wouldn't fit your big male hand.

As you do so the Medallion in your hand feels warm and you can easily slide the ring on your finger... But it's not your finger anymore, you notice that you hole hand looks different, smooth and petite, with long nails.

You have to rub your eyes and try to understand what just happened. It musst have been something with that old Medallion and you friends ring.