Campus Sophisticate Collection 925 Pure Italian Silver Necklace Campus Sophisticate Collection 925 Pure Italian Silver Necklace Custom Engraved Class Charm Necklace With Sterling Silver, Personalized Campus Sophisticate Collection 925 Pure Italian Silver Necklace. Campussophisticate 925 Italian Silver, also known as sterling silver, is the high end of a range of silver based products. Because pure silver is too malleable to use and scratches easily, sterling silver is composed of 92. 5 percent silver and 7. 5 metal. The metal, usually copper, nickel, or any other strong type, are strong minerals that make the end product stronger, shinier, and more durable.