This fine 1 mm Sparkly Silver Chain is perfect for very light weight charms and pendants 30 inch Chain Necklace for Women of All Ages Excellent Quality Solid Sterling Silver Made in Italy Nickel Free Hypoallergenic This Twisted Serpentine Chain Is Sterling Silver, Made in Italy. it is a very Fine and Sparkling Chain measuring less than 1/32 inch (1.0 mm) Thin. A good chain for small and light weight charms. And as in all the chains we carry, it is Nickel Free so it's Hypoallergenic.