Features beautiful Round, Brilliant cut 5mm Trustmark Created Red Rubies. Trustmark Gemstones are high-quality created Gemstones that come with a 10-year warranty. The post and friction back are made with solid 14K White Gold. As Ruby is the birthstone of July, they make a great gift for anyone with a July birthday! Professionally made at our U.S. studio.Please Note: Items in images may appear larger than actual size. The friction back (butterfly clutch) design may vary depending on product availability.