Platinum Ore

Can be found in caves. This Ore has higher quality than Gold and spawns as a natural alternative to Gold in some worlds. It can be made into bars to make armor, pickaxes and such that are slightly but noticeably stronger than Gold equipment (ex. a Platinum Broadsword has a base damage of 15 but a Gold Broadsword has a base damage of 13). The hardmode ore that will spawn in your world when you have Platinum will be Adamantite.