Silver jewelry actually rarely turns skin green—that reaction is typically associated with copper. When silver jewelry causes green discoloration, it's usually because the piece contains copper alloys (as sterling silver is 92.5% silver and 7.5% other metals, typically copper). This green mark occurs when copper reacts with acids in your skin or environment, creating copper salts that leave that characteristic green tinge. Factors like high humidity, lotions, medications, or your unique body chemistry can intensify this reaction. It's harmless but can be prevented by choosing higher silver content, applying clear nail polish as a barrier on ring bands, or removing jewelry during activities that cause excessive perspiration.