This collection of jewelry is all sold together. I have not had the gemstones tested and I’m not a gemologist. Rings are hallmarked 925, silver necklace is marked sterling, bracelet with crystal like stone is marked 925. These are not junk pieces of costume jewelry. These are very well made. Please study the photos and ask questions. As is sale. Turquoise ring in last photo/on finger is not marked that I can see. It’s sterling I’ve had it over 30 years. Everything is of good quality. I’m pricing this at costume jewelry prices ! Ring sizes are in the images and are approximate. I cannot guarantee the size.