Eccentric Looking Rainbow Colored Vitrial Lunar Earrings are Spring Clip Backs like the ones that Haskell used. The material is light weight and hard to describe. It is not a glass, and not a sequin. It looks like someone took 2 pointed sequins and put them together, but these are some sort of plastic. The light shines on them and gives off great color. There is a single Vitrail Rhinestone at the top of the ear section. They measure 2 1/4 inches long with the lunar part being just over 1 1/4 inch wide. Fabulous older earrings that look so very right today.