We used to have an office assistant that liked to make up names for things... she called these "crazy light" stones! Personally, I think that's a great name for them, but Sarah Coventry called these Moon-Lites. I've never seen colors like this in anything else, before or since. Almost "neon" colors of iridescent lime green, orange, yellow, and a very odd pinky blue violet color that shows up as bright blue in the photo. Our camera didn't care for this piece at all... colors are a bit more subtle than the picture makes them look. Circa late 1969, early 1970. Sarah Coventry catalog numbers - Pin #6287 bracelet #9287.