Amethyst Studs Qty: 1 2 3 4 5 6 7 8 9 10 Price £300.00 9ct Amethyst Stud Earrings. 9ct yellow gold twist-wire & rope edge design stud earrings set with good quality 7 x 9 mm purple amethyst stones. The earrings have post & scroll fittings. SALE 9ct Gold Jet & Diamond Birthstone - Amethyst for February