The enharmonic of Gb is:
O A. F#
O B. G
O C. F
O D. G#

It could be either F# or G#

Explanation:

If you’re familiar with the circle of fifths — or you just know your way around the key signatures — you may have noticed a few anomalies. For example, keys like B-sharp and F-flat major are seemingly absent, while others go by two names. When comparing C-sharp major and D-flat major, it's easy to see these notes are exactly the same.  

C-sharp major: C#   D#    E#    F#   G#   A#   B#

D-flat major:     Db   Eb     F     Gb   Ab   Bb    C

Likewise, their respective relative minors are also identical in tone.

A-sharp minor: A#    B#   C#    D#    E#    F#    G#

B-flat minor:     Bb    C     Db    Eb     F     Gb    Ab

        i think it is referred as the 8th wonder of the world because each of the terra cotta warriors was not the same. they each had many things with their physical stature, like different height, armor, and different characteristics, which were all different. what makes it interesting is that there were 8,000 soldiers in that tomb. so making that many soldiers for the emperor meant a-lot to the emperor. it means that their is strength in numbers now matter how different.

hope it : p