Signed JOY vintage costume jewelry
First of all, there is not much information about the company which produced jewelry decorations with marking JOY. However, some researches based on the facts and technique let me suppose JOY decorations may relate to Lester Joy. Talented innovative designer Lester Joy was among the founders of Les Bernard (1963), a pioneer in the field of costume jewelry of high class design. Most of these decorations are made in the 1950s, early 1960s, just before the appearance of Les Bernard in 1963.
Traditionally, Lester Joy used Plique a Jour techinque, poured faux stained glass, or stained glass resin, which, in combination with the gold surface formed an unusually beautiful duet. Made in a variety of styles, Joy vintage decorations are all of high quality and are quite rare in the vintage jewelry market.