Silver Amethyst Earrings with CZ'sAmethyst Silver Earrings These 925 sterling silver earrings are designed around vibrant, oval cut amethyst stones. Positioned above each amethyst, a trio of cubic zirconias adds a bright, sparkling accent to the design. The entire setting is crafted from 925 sterling silver, an alloy composed of 92. 5% pure silver, known for its durability and polished finish. The earrings are completed with matching sterling silver posts and secure butterfly backs