Superb Gem is a thoroughbred horse born in Australia in 2011. Race horse Superb Gem is by Enemy Of Average (AUS) out of Rubellte (AUS) , trained by R T Leemon. Superb Gem form is available here. Owned by Mrs G D Leemon, J R Sundell, D J Lee, Mrs C T Kotsakis, A Cook, P W Robertson, Mrs L J Viney, K D Viney, S L Barrass, Miss M Kemp & Ms D Kemp.