Stunning 5.00 Ct Blue Topaz 925 Sterling Silver Dangle Earrings 9mm Beautiful Earrings 5.00 Ct 100% Natural Blue Topaz Measurement: 9mm Round Gemstones may have been treated to improve their appearance or durability and may require special care. All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free.