The G diminished whole–half scale has 8 notes: G, A, Bb, C, Db, D#, E and F#. Its formula is 1 2 b3 4 b5 #5 6 7 and its steps, in tones, are 1 – ½ – 1 – ½ – 1 – ½ – 1 – ½.
The whole–half diminished scale alternates a tone and a semitone: eight symmetrical notes, used in jazz over diminished chords.
G diminished whole–half
G A Bb C Db D# E F# · 1 2 b3 4 b5 #5 6 7
Colored dots: notes of the scale, the root is the darkest.