✦ Waterproof, non-tarnish, hypoallergenic ✦ 18K Gold PVD coated 316L Stainless Steel ✦ Perfect for accenting charm necklaces and bracelets ✦ A must-have for permanent jewelry and charm bars!- PVD COATING - We use the process of PVD Coating our 18K Gold jewelry over 316L surgical grade stainless steel for a non-tarnish, hypoallergenic, polished finish that will hold up best to everyday wear and will never turn your customer's skin green. Charm Size: 16mm x 10mm Recommended Jump Ring Size: 20g - 22g Approx. Weight: 2.15 grams