Winner over scissors, loser to paper

ROCK

This classic hand gesture in a childhood game represents strength and can also be a type of music genre or a solid mineral.

This clue references the classic game Rock-Paper-Scissors, where each option beats one and loses to another. "Winner over scissors" points to rock, since rock crushes scissors, while "loser to paper" confirms it—paper covers rock. The answer is straightforward once you recognize the game’s simple rules.