Comet pearls refers to the shape. Comets race through space with a tail forming behind it, similar to the shape of these cultured pearls. Each iridescent pearl has been hand knotted for added security. The clasp is likely stainless steel (or sterling silver) as it doesn't have a stamp. Pearl Guide
Estate collection: Every attempt has been made to verify diamonds and gemstones for any treatments and positive identifications in estate jewelry. All estate collection sales are final and sold "as is."