Purity: Ruling on the Use of Gold and Silver Utensils
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 227
Eating and drinking from gold or silver utensils are unlawful. In fact, based on obligatory precaution, using these utensils in general is unlawful. However, there is no problem in using them for decorating a room and suchlike, or keeping them, although the recommended precautionary measure is not to [decorate with them and/or keep them]. The same applies to making gold and silver utensils or buying and selling them for decoration or keeping.
-Ayatullah Sistani, Practical Laws of Islam, Purification (Taharah)