Sapphire Rings for Women - September birthstone Blue gemstone ring for women, great and eye-cathing deep blue gem colored signet ring. Promise Engagement Rings for Women : 1.3 Carat Big Gemstone Signet Ring, classic and sturdy 4 prong setting, inlaid with white moissanite stone around the center, sparkling and stunning rings for her on special days. Celtic Knot Ring : lucky celtic knot design on both side of the ring band, which symbolize eternal love and good luck. 925 Sterling Silver Made ring, rhodium plated, hypoallergenic, lead free, nickel free. Ring Size available in 6 7 8 9 10 ; ring weight 2.66 grams / piece. CAIDIKA Birthstone Rings for Women Sterling Silver Celtic Promise Ring Oval Cut Birthstone Ring & Moissanite/Cubic Zirconia Engagement Cocktail Ring for Women.