Gold is not money... at the moment. Money must be the most liquid "commodity", and liquidity is decided by how interested sellers of goods are interested in taking that particular goods as payment. You will not be able to go down to the grocery store and buy goods with a gold or silver coin. They will take the present fist currency, and that is why that is money.
Gold and silver are expected to be brilliant stores of value during an eventual collapse. That is why they are attractive, not for being money.