Flowers and leaves wrap around Thai silver, unstamped Beautiful details Like new! Size 7.5 Thai Silver is 97.5-99% pure silver, sterling silver jewelry is 92.5% pure silver. The high silver content of Thai silver makes it softer than sterling and it does not tarnish as easily, as the copper in sterling silver is the alloy that makes it tarnish. Top rated seller! Smoke and pet free home. Silver ring, Hawaiian ring, Unique jewelry