What does number 835 on pearl necklace clasp mean?

The number 835 on a pearl necklace clasp typically indicates the purity of the silver used in the clasp, signifying that it is 83.5% pure silver, or sterling silver. This standard is commonly found in European countries, where silver is often marked with a three-digit number to denote its purity. In contrast, sterling silver is usually marked with 925, indicating 92.5% purity. Thus, 835 signifies a slightly lower silver content.