Yoomurjak's Ring was created in 2006-10.
Loki stole Andvari's magical ring.
His Akatsuki ring bears the kanji for Vermilion (朱,shu).
It looks like Jim Ward invented circa 1975.
The heraldic charge in the shape of a small ring is an annulet.
The signet was a stamp which was used to impress a picture into wax used to seal a document. It was convenient to have this signet made into a ring.
With This Ring was created in 1951.
Get in the Ring was created in 1991.
The Linking Ring was created in 1923.
Ring a Ring o' Roses was created in 1881.
The Missing Ring was created in 1982.
The Ring of McAllister was created in 2007.
The Talisman Ring was created in 1936.
The Blood Ring was created in 1940.
The Ring of Charon was created in 1990.
Give Her a Ring was created in 1934.
The Promise Ring was created in 1995.
Magical Ring was created in 1983.