Vintage Blue Glass Moonstone 1950s Rhinestone Necklace

When I first saw this necklace I immediately called it a periwinkle color. After doing some research I learned that this matte blue rhinestone color is referred to as blue moonstone. There are five large squares that alternate between shiny and matte. This necklace would have been worn for an evening out in the 1950s but today anything goes and you don't have to wait until you go out for an evening to wear it. Adjustable in the back up to 16 inches.