A little information found online about Jelly Belly Jewelry: Lucite was a new form of plastic developed by Du Pont in 1937 when these wonderful pieces of whimsical jewelry were created. In the late 1930's and 40's, "Jelly Belly" soon became a popular name for the clear transparent bodies of theses charming items. To qualify as a true "Jelly Belly" the belly portion must be made of Lucite, not glass. The lucite must be clear not colored and set in metal. The more coveted pieces are the larger pieces with Lucite set in Sterling Vermeil (gold washed Sterling). The bulk of these "Jelly Belly" pieces of jewelry were made during the war years (1942-1946). After the war and into the 1950's they were made in base metals rather than Sterling, however, these pieces are also highly collected today.