Aries' Sword

Weapon

Aries' sword (or at the very least the design) was past down to him by his father, Mars. Since it is made of magic, it is formed by the production of magical energy, in Aries' case out of his hand (either one, doesn't matter).

Aries' sword is fairly light, because it is made out of magic rather than tangible material.

Magic, platinum blade with dark varnished and carved wooden handle

Aries' Sword was made when he was the human equivalent age of a young teen.

Can be absorbed into the body or (for lack of a better term) expelled out of the body via the hand(s). Blade can become engulfed in fire.