also: ダイアモンドリング
noun
Refers to a ring set with a diamond, typically as an engagement ring or luxury accessory.
彼は彼女にダイヤモンドリングを贈った。
He gave her a diamond ring.
noun
diamond ring effect (astronomy)
An optical phenomenon seen just before or after a total solar eclipse, when a single bright point of sunlight remains visible along the lunar edge, resembling a diamond ring.
皆既日食の直前、ダイヤモンドリングが見られた。
Just before the total solar eclipse, the diamond ring effect was visible.