Pairing index of Libra and Gemini: 100.
Pairing specific gravity: 52: 48
The second best constellation in Libra: Aquarius
Libra-Aquarius pairing index: 100.
Pairing specific gravity: 48: 52
Libra is the best constellation, third place: Leo.
Libra and Leo pairing index: 90 points
Pairing specific gravity: 56: 44