peridot

 
Pronunciation: /ˈpɛrɪdɒt/

noun

[mass noun]
  • a green semi-precious mineral, a variety of olivine: [mass noun]: pieces set with peridot and blue topaz [count noun]: emeralds, rubies, and peridots

Origin:

early 18th century: from French, from Old French peritot, of unknown origin