Ametrine

Ametrine is one of the owners of Jewel Land's Magic Shop and Trystine's twin sister. She is a cat with yellow colored fur and wears purple Arabian-style clothing, a cream colored cape and a crown on top on her head. Her heterochromic eyes are arranged so her left eye is red while her right eye is purple. She and her sister gave the Jewel Pod and the Rare Rare Drops to Ruby. She and Trystine became recurring characters of the series. Ametrine also has good knowledge in magic as well, but not to an extent like the teachers of the Magic Academy. She also possess a Jewel Pod, which is used to browse on some spells they can use. Both the Twins also had a one-shot cameo in Kira Deco. Both their names is based on Ametrine, a type of Quartz.

(Source: Wikipedia)