Screw on Earrings Early to Mid Twentieth Century, Purple, Pink, Crystal Color.  Screw on Earrings from Early to Mid Twentieth Century. These earrings are very beautiful, but I don't really wear jewelry. It's was my great grandmother's, but she lived to be 100 and died in 1993, so it's hard to say how old it is. I went to a gold dealer and he said it's not real gold, but definitely antique/vintage.