Fig. 1 · G#dim on the keyboard

piano chord

G♯dim

G♯1B♭3D♭5

Two minor thirds stacked. The fifth is diminished, so it cannot be dropped without losing the chord.

Written the other way round it is A♭dim — the same twelve keys on a piano, a different piece of notation.

on guitar on ukulele the scale

What is true of it

G♯dim is G♯, B and D — 1, b3 and b5 counted from G♯.

G♯ in other shapes

G♯major G♯mminor G♯augaugmented G♯5power chord G♯sus2suspended second G♯sus4suspended fourth

Cdim C♯dim D♭dim Ddim D♯dim E♭dim Edim Fdim all 374