1 Question: Is it permissible to use gold and silver cuff-links, pins and tie pins as a form of beautification?
Answer: It is forbidden for a man to use these mentioned gold ornaments as a form of beautification (obligatory precaution).sistani.org/15284
2 Question: Can a man wear a platinum ring?
Answer: Yes, he can.sistani.org/15285
3 Question: Is it permissible for men to wear white or yellow gold?
Answer: It is not permissible for men to wear gold objects, even though the gold may be white in color. Wearing gold plated objects is also not allowed and prayer wearing gold would not be valid for men. However, there is no problem in wearing something made of platinum.sistani.org/15286
4 Question: Is it permissible for a man to wear a watch that contains parts made from gold or a watch whose strap is made of gold? Is it permissible to perform prayers with it?
Answer: It is permissible to wear the first item and pray in it but not the second.sistani.org/15504
5 Question: When one must give blood money (Diyyah) what is the Karat of Gold equivalent of Dinar?
Answer: One Dinar is equal to 3.5 grams of 21K (Karat) goldsistani.org/15287