Silver jewelry changes color primarily due to a natural process called tarnishing. When silver interacts with sulfur compounds in the air, cosmetics, or certain foods (like eggs or onions), it forms silver sulfide, which appears as a darkening or yellowing on the surface. This isn't damage—it's just chemistry at work! Humidity, body chemistry, and how often you wear your pieces also influence how quickly this occurs. Some people's skin chemistry causes faster tarnishing than others. While regular cleaning can restore shine, many silver enthusiasts appreciate the unique patina that develops, giving each piece character and a story of its own.