Adjective: semiprecious ,se,mI'pre-shus or ,se-mee'pre-shus [N. Amer], ,se-mee'pre-shus [Brit]
- Used of gemstones having less commercial value than precious stones
"such semiprecious stones as amethyst, garnet, jade, and tourmaline"
See also: valuable
Encyclopedia: Semiprecious