This is a gorgeous collector piece. 14kt gold over sterling silver - vermeil - tiny prong set stones of genuine ruby - emerald - sapphire and some mystery clear stone. I hesitate to call it a diamond. It is a regular bar pin with secure clasp. Measures 1 and 7/8 inches long. Only one I have from my personal collection. I acquired this piece at the Tucson Gem Show many many years ago.