Vintage Long Necklace with Black & Orange Beads

His is a long necklace with a sleek chain and black and orange beads. It is very pretty ans makes a nice classic statement. It’s real vintage from my great grandmother’s jewelry collection. Please note that I’m not a jewelry expert and I do not know what may be real or not. Everything posted is just my estimate/guess. I will do my best to gain accurate descriptions and measurements (I do have a ring measurement tool).