Indonesian Silver Wire Craftsman's Skill: Silver Filigree. Silver 925. Twist ring, color: pink gold, silver (silver 925) plated with 18k gold. (Does not contain nickel or tin, which are likely to cause metal allergies). For those who want a thick ring. This is a thick ring. The ring is approximately 2mm thick. Sizes available: 7, 8, 9, 10, 11, 12, 14, 16, 17, 18, 19, 20, 21, 22, 24, 25. Please specify your size when ordering.