[quote=@rocketrobie2]

...as for a weapon I had three ideas. I thought of using either a small samurai sword (Since my Gem be SMALL), a little laser pistol or leg armour that goes from his feet to his pelvis. For my armour idea, I had the idea of having it be really elegant 'n' stuff since I'm planning on having my Gem's type of gem typically be really elegant and not a fighter (more like entertainers or more like Pearls) but then my character being less than elegant and it being a kinda funny contrast.
[/quote]

How about, for their Gem weapon, he uses greaves? Leg armor on his shins. He could fight with kicks and dance-like movements, kinda like capoeira or similar marital arts? That way he'll be kicking your ass and looking good doing it. 

As for a power, maybe keep it thematic with the fighting style- something like wind or density manipulation, even.