9ct Yellow Gold Amethyst Princess Cut 3mm Stud Earrings. 03-20-157. These feminine 9ct yellow gold earrings feature beautiful princess cut Amethyst gemstones of a lovely deep purple hue. The Amethysts are bezel set in 9ct yellow gold and completed with secure post and butterfly fittings.  We have an expert team of gemstone and diamond specialists who handpick and grade each jewel to meet our high standards and a team of talented in house designers who combine their talents to bring you our exclusive Precious Gemstone collection. You can find other amethyst pieces online and in store to complement these earrings. All are lovingly and securely dispatched with our elegant jewellery packaging.