Beautification

Women wearing diamond rings

Q: It is written that "Women are permitted to wear silver and gold rings. They are not allowed to wear any other type of rings besides silver and gold. Apart from rings, women are allowed to wear all types of jewellery, whether gold, silver, platinum, imitation, etc."

Is it not permissible to wear diamond rings as well?

Men wearing rings

Q: Recently, I heard in a sermon that it is not permissible for us, Muslims to wear rings made of stone or some other material or taweez with the belief that it will avoid harm and it will give us the blessings and barakah. In my locality most of the imams follow the trend of wearing such rings or taweez. Is it permissible for me to do namaz behind them?