These rings are Gold Filled. They are size 8.5, tied wire rings, made from one piece of gold filled wire which passes through the stone and 3 mm gold filled bead accents. The stone choices are 4 mm rounds, 5-6 mm long oval or cylinder or freshwater pearl. ( sizes are approximate) Handmade by us. Want a different size, stone or one in Sterling Silver? Contact us. Lyn's Jewelry, in business operating out of Sunny Syracuse since 1989.