Semi Precious Stone Hoops 4 Pairs Vintage

4 pairs of semi precious stone hoops - circa 1960’s. My Mom used to change the look of her gold shrimp hoop earrings by adding these. I’ve used them as pendants on necklaces. Tiger eye, onyx, jade, and I believe carved bone ( not ivory). Approximately 1” x 1.25” though all are a little different in size by tiny amounts. EUC, easy way to change up the look of your existing jewelry.