I am a bit hesitant on these as they rub rough so maybe real but have no idea of origin. They are light weight so not glass. These are white faux pearls that are about 7mm at the center and then taper down dramatically to the clasp. The clasp is one of those square hook and plunger style silvertone affairs with the art deco look. It is marked JAPAN on the back of the clasp. The clasp works fine and the necklace is 17-1/2" long. The faux pearls are not individually knotted in between but they are strung fairly tight. Lustre on faux pearls is perfect. The necklace is in lovely vintage condition with some age related patina on the clasp. Otherwise, just lovely! Great wear for prom, wedding or that little black dress.