The target is raked with claws as hard as diamond. Inflicts damage, that raises the user's Defence moves.
Diamond Claw has a 50% chance to raise the user's Defense.
In Gen VI a move called Diamond Storm is a damaging move, its has the same category as Diamond Claw, has higher PP than Diamond Storm and has a 50% chance of raising the user's Defense.
Diamond Storm does 20 more damage than Diamond Claw.