- Used other than as an idiom: see diamond, ring.
- By extension, an engagement ring, usually one given by a man to a woman.
1923, Peter Bernard Kyne, Never the Twain Shall Meet, page 19:
- If it were not a tradition that a woman shall accept from her fiance a diamond ring which the idiot cannot, in all probability, afford to give her — well, women would not accept them.
2006, Mary Slonaker, The Vinton House, page 37:
- “Delvin, a diamond ring means you are engaged to be married. I barely know you.”
2010, Juliet Blackwell, If Walls Could Talk: A Haunted Home Renovation Mystery:
- He frowned slightly, whether at the loss of a potential sale or the unnaturalness of a single woman standing beside a handsome man and not lusting after a diamond ring I couldn't be sure.
- (astronomy) An optical phenomenon visible during a moment of a solar eclipse when only a tiny part of the sun is not obscured by the moon, shining like a diamond in the ring of the sun’s corona.
finger ring on which is mounted a diamond
optical phenomenon during a solar eclipse