Vintage natural emerald zircon ring $ 14.84 Material: Silver Shape: square Treatment process: inlaid gems Applicable gift-giving occasions: travel souvenir Style: Women's Inlay material: sterling silver inlaid with gems American Size Standard HK Size Standard Size Circumference(mm) Diameter(mm) Size Circumference(mm) Diameter(mm) 4 46.8 14.8 8&9 48&49 14.8&15.1 5 49.4 15.8 10&11 50&51 15.4&15.8 6 52 16.5 12&13 52&53 16.2&16.6 7 54.5 17.3 14&15 54&55 16.9&17.2 8 57.2 18.2 16&17 56&57 17.6&18.0