You'll love this ring combo set with your choice of natural gemstones. Available in bright sterling silver, 18k vermeil gold, or rose gold. Gemstone are approximately 5mm x 7mm in size. Open back setting. Band stamped with 925 on inside. If you plan stacking the rings on the same finger please choose one size up. METAL   ✦ 18K VERMEIL GOLD   ✦ ROSE GOLD   ✦ 925 STERLING SILVER Please note that we use alternative birthstones for some months and offer multiple birthstone options to select from for Adjustable Topaz Ring For Anniversary, Fine Jewelry Natural Stones Gemstones For Anniversary, Gift Yellow Gold Oval Cabochon Rings, Stackable Topaz Ring As Gift, Handmade Oval Yellow Gold Stackable Rings, Stackable Topaz Ring Gift, Adjustable Fine Jewelry Moonstone Ring, Adjustable Moonstone Ring In Fine Jewelry Style, Yellow Gold Oval Cabochon Rings For Gift