925 silver earrings, commonly referred to as sterling silver, are safe to wear due to their hypoallergenic properties, especially for those with sensitive or allergy-prone skin. However, since other metals or alloys could be harmful to the skin, it's important to make sure the earrings are made of real sterling silver. Silver isn't a very effective antibacterial agent; it has some antimicrobial qualities. It doesn't replace good hygiene habits, but it could aid in limiting bacterial development on the surface.