- A wedding ring or wedding band is a metal ring indicating the wearer is married. Depending on the local culture, it is worn on the base of the right or the left ring finger. The custom of wearing such a ring has spread widely beyond its origin in Europe.
- A gemstone set ring often used to show a long-term commitment of love. Although often bought as an accompaniment to the wedding and engagement ring, it can be worn on its own as a dress piece. Eternity rings come in several distinctive designs:
- A type of modem wedding ring with encircling gemstones. When the gemstones extend only on half of the shank, it is called a half--eternity ring.
- a pale green variety of chrysolite; used as a gemstone
- A green semiprecious variety of olivine
- Peridot is an IBM project developed by the Extreme Blue internship program to check web sites for broken links and assist in updating them. IBM has two patents ( and ) on this technology.
- Peridot ( or ) is gem-quality forsteritic olivine.