I came with a new idea of a quick:
Diamond: The user can control diamonds, create particles of them and also heal with diamond, I'll explain it. The user can create many small diamonds, and he can control them and attack with them, protect with them and also connect many particles of diamonds into a big diamond.
To attack, the diamonds become fancy deep red, and can be used for get shoot, get connected with arms or legs and attack with punches, scratches, kicks and more.
To defense, the particles of the diamonds become fancy deep blue, and be connected to a big wall that protects the user.
To heal, the injured areas of the body are covered by the diamonds and the diamonds become glow green and heal the injured area. The more the injury are serious, the healing will take more time.
'Limitation:' The diamond itself is as hard as a real diamond, but if a quirk is used to try to break it, it's like to break a rock (which is not so hard to break if you have a quick like One for All, Muscle Augmentation, Strongarm, and etc.). But if the user uses the defense form of the diamonds, it still will be breakable, but less than normal, attack or heal form of it.
'Equipment:' A sword or a knife. If the user holds a sword or knife, and the diamonds and the sword/knife can be fused into a red glowing diamond sword.
Special Move:
1. Diamond Beam: A storm of diamonds gets created and the user levitates inside the diamond storm. Then, the user points a finger like this ƒæë in addition to make an imaging of gun, and then a red energy ball gets created and a red glowing beam gets shoot towards the foe.
2. Sharpened Diamonds: The user punches the ground, and a few sharp diamond pillars get out from the ground toward the foe to hit him. It's reminds Overhaul's attack that he creates sharp rocks to attack.
3. Diamond Suit: As I said before, the diamond particles can get connected to legs or arms and attack with it. So, the diamonds can also get connected almost for all the body, and make a suit that will protect the user and will increase his attacks like punches, scratches, kicks and more. But to get this suit, when a foe attacks the user, the user needs to make all of his body into a diamond, and if the diamond gets shattered by the foe's attack, a large diamond pillars gets out from the ground after something like 10 seconds and the user stay inside of it. Then the pillar gets shattered except from the user himself and the suit that he wears.
What do you think about this quirk? And sorry for the bad English if it was bad…