Metals and stones here are a big part of society. Each stone has a certain attribute they are supposed to help with (health, luck, etc...) Silver for instance is supposed to be very healthy for you, so upperscale food will have a very thing sheet of this silver metal on it (think goldschlager). You will see it on candy, Galub Gamon, Meat, etc.... It has no taste, and you don't even notice it's there other than looks. I actually thought it was tin foil at first and tried to remove it. It makes things look very elegent.