It looks like a slanted number sign.
If you are talking sheet music, a sharp sign is as it always is, a # if I am not mistaken.
It looks like this: #
It simply looks like an x.
That is the sharp sign, sharps raise a note by a half-step.
they look like sharp wood and sharp jewel
i looks sharp
#
a#
Sharp teeth Sharp claws
the at sign looks like this: @
The natural sign, which looks like a sharp (#) with the two side tangs as well as the bottom left and top right ones removed.
A double sharp. They look like bold letter 'x'.