Various articles of jewelry (e.g. a finger ring, a small brooch) that are decorated with the emblem, monogram or initials of a fraternity (or sorority) and that are worn by its members. Such pieces include Masonic jewelry and articles of the fraternities (or sororities) of colleges in the Untied States. They are usually made of gold and are frequently enamelled or set with diamonds or pearls.
From: An Illustrated Dictionary of Jewelry, autor: Harold Newman, publishers: Thames and Hudson