He had a sister, who’s name is Amethyst or “Amy” for short. As foals, they competed for everything and this was one of those times.
Base owned by ElementBases on DA here; https://www.deviantart.com/elementbases/art/MLP-Base-155-771391183
Background vector owned by Vector-Brony on DA; https://www.deviantart.com/vector-brony/art/Crystal-empire-street-417400286