The rainbow ear cuff can be worn either on the left or right ear. Simple design but makes a huge statement! This rainbow ear cuff is composed of solid sterling silver (925) with round crystals such as ruby, pink, sapphire, yellow sapphire, emerals, blue sapphire and amethyst. More Details: Carefully handmade. Hypoallergic Earrings. Sterling Siver (925). Thickness: 1.5 mm. Inside Size: 9 mm. Overall Size: 14 mm. Metal Color: Silver.