gemstone

/ˈdʒɛmˌstoʊn/
noun
  1. A precious or semiprecious stone that is cut and polished for use in jewelry or decoration.
    • The museum displayed a collection of rare gemstones from around the world.
    • She chose a deep blue sapphire as the centerpiece gemstone for her ring.
    • Amethyst is a popular gemstone known for its beautiful purple color.
  2. A person or thing that is highly valued or considered excellent in some way.
    • The small coastal town is a hidden gemstone for travelers seeking peace.
    • That old book is a real gemstone of historical knowledge.
    • Our new teacher is a gemstone — she makes every lesson exciting.
Synonyms