Blue Topaz Ring, 925 Sterling Silver Ring, Women Ring 925 Sterling Silver Handmade Jewelry stone size : 4 x 4 mm weight : 4.5 Grams You can enjoy the beautiful handmade ring and authentic silver. Occasion: Birthday gift, Valentine's Day Gift, Anniversary Gift, Wedding Gift, Engagement Gift, Christmas Gift, Gift For Her, Gift For mom, graduation gift, New Year Gift, Thanksgiving Gift, Housewarming Gift. Benefits Of Wearing Silver: Silver has significant health benefits that have been used across cultures for centuries. Silver has a proven track record as a powerful antimicrobial agent fighting infections and aiding in cold and flu prevention, wound healing, and more. Silver also helps with internal heat regulation and circulation. Size guide: Size 4.5 - diameter 15.27 mm Size 5 - diameter 15.7 mm Size 5.5 - diameter 16.1 mm Size 6- diameter 16.5 mm Size 6.5 - diameter 16.92 mm Size 7 - diameter 17.3 mm Size 7.5 - diameter 17.75 mm Size 8 - diameter 18.2 mm Size 8.5 - diameter 18.53mm Size 9 - diameter 18.9 mm Size 9.5 - diameter 19.41 mm Size 10 - diameter 19.84 mm Size 10.5 - diameter 20.2 mm Size 11 - diameter 20.68 mm Size 11.5 - diameter 21.08 mm Size 12 - diameter 21.49 mm