This is a beautiful Star Trek mug for anyone who is A true Star Trek fan. The mug is a must have if you have a collection. BLACK is beautiful. The gold is metallic of some kind unsure of what type. There are no chips there is minor discoloration ON TOP GOLD LINE. This item is not microwavable. Overall it is in wonderful condition. Please look at the pictures carefully before bidding on this item. Thank you for looking and keep on trekking.