I'm wanting to make a One Piece story and I'm wanting to make the main character have a devil fruit that allows him to have abilities like the twinkle twinkle fruit but having to do with rubies instead of diamonds.

Sounds nice, plus with it being called twinkle twinkle fruit. You can flavor whatever gemstone it is(for me emerald would be dope)

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The twinkle twinkle fruit only does diamonds otherwise it would be called twinkle twinkle fruit model diamond.

I was thinking of calling it the Gem Gem fruit model ruby.