facet

/ˈfæsɪt/
verb
  1. To cut or shape a gemstone so that it has flat surfaces (facets).
    • They facet the crystal to maximize its brilliance.
    • He learned how to facet diamonds during his apprenticeship.
    • The artisan facet the rough stone into a beautiful gem.
noun
  1. One side or aspect of something, especially a complex issue, situation, or personality.
    • She showed a different facet of her personality when she started singing.
    • Honesty is an important facet of a good friendship.
    • The report explored every facet of the environmental problem.
  2. One of the flat, polished surfaces cut on a gemstone or crystal.
    • The jeweler carefully polished every facet of the emerald.
    • Each facet of the ruby reflected a deep red color.
    • The diamond had many tiny facets that sparkled in the light.