A bright, refreshing green like the gemstone emerald. Emerald — also called "绿玉" (green jade) or "绿柱石" (beryl) — has been used since ancient times to describe bright green. In the 16th century, the Venetian painter Paolo Veronese developed and used a color named after himself — "Paolo Veronese green" — also a name for emerald green. However, it was toxic and also called "poison green."