You don't have to dupe the diamond if you don't want, but that's what I'm doing since my buddies and I are building a massive village. It's no fun making stone tools every 10 minutes or burning through all your iron to make tools. I'm duping the diamond I just found and making a slew of tools.
Creative mode can't come soon enough.
One tequila, two tequila, three tequila... floor. Cash only.