Hey 👋🏼,
Why would you want a card made out of Platinum? I think that a card out of normal Metal would be enough or do you want a credit / debit card you need to store somewhere safe because of the higher price of this metal for example the 585er Platinum costs around $25 per Gram. If you think about the American Express Platinum card - this card isn’t actually made out of platinum. It’s product name is just called like that.