Finger size (diameter finger) - 16, 17, 18, 19, 20 mm Weight gold 14k and Silver 925 Ring 16 size - Gold: 7.7 grams;___ Silver: 6 grams Ring 17 size - Gold: 8.1 grams;___ Silver: 6.3 grams Ring 18 size - Gold: 8.5 grams;___ Silver: 6.6 grams Ring 19 size - Gold: 8.7 grams;___ Silver: 6.8 grams Ring 20 size - Gold: 9 grams;____ Silver: 7 grams