Rhinestone is refined, mature, and elegant in every facet of his being. He’s also weird but he hides it so well. He has a dramatic side, but not too over-the-top like Rarity’s.

“Eggy, you’re the only one that understands me…”

He has a pet rock named Eggy. Because it looks like an egg. O̶r ̶m̶a̶y̶b̶e̶ ̶i̶t̶’̶s̶ ̶a̶n̶ ̶e̶g̶g̶ ̶s̶h̶a̶p̶e̶d̶ ̶l̶i̶k̶e̶ ̶a̶ ̶r̶o̶c̶k̶.̶ ̶
Rhinestone is the most open with Eggy. When he’s alone, he talks to Eggy about everything- his feelings, worries, secrets, etc.
Eggy is the best listener and confidante.

Rhinestone has a secret desire to cosplay cute magical princesses. (Only Eggy is aware of this.)