To the left, G natural. To the right, A natural (on a piano keyboard).
Four key signatures have G sharp and E sharp in them: F sharp Major, D sharp minor, C sharp Major and A sharp minor.
G sharp
G sharp
G Sharp
G has only one sharp, which is F-sharp.
The key with three sharps is A major, however A major uses C sharp - alongside with G sharp and F sharp - instead of D sharp.
The key of G Major has one sharp: F#
G sharp is located to the right of G on the piano keyboard. It is the black key immediately to the right of the white key G.
To play a G sharp major chord on the piano, place your right thumb on the G sharp key, your middle finger on the B key, and your pinky finger on the D sharp key. Play all three keys simultaneously to sound the G sharp major chord.
Sharp.
C# Major
The black key directly to the right of G is G-sharp/A-flat.