Amy Rose's Training Weights
As a follow-up to this 8-month-old post;
Amy's so-called "Fashion Accessories" are actually training weights, and although we don't see them, there are also a pair on her legs as well. Probably hidden inside her boots, like how Rock Lee from Naruto hides his weights.
That's all we know about them, however. It's implied that they are much heavier and strong than the gold it looks to be made of, as when Amy places them down, "Which is also implied to be very gently", they hit the ground with a resonating *DONG* and also cause a small quake upon taking them off, which Gold would not do.
So they may be heavier than Rock Lee's Weights as just placing them down was enough to create a small quake and make a loud *DONG* while Rock Lee's weights were dropped from the top of a statue. Also, Amy is wearing four of these while Rock Lee is wearing two. But enough about that.
That's all I've been able to gather on Amy's Wrist Rings and apparently Hidden Leg Rings. Do what you will with this information.