HYPOALLERGENIC AND EASY TO WEAR - Glittering Cubic Zirconias accent the delicate curved S-shaped design, adding a touch of luxury and sophistication to these elegant Swiss Blue Topaz earrings for women. Set in durable 2.25 grams of premium Sterling Silver these earrings are gentle on your ears. Post friction butterfly backs secure these gorgeous Blue Topaz stone earrings. Hypoallergenic, nickel-free and suitable for sensitive skin. Earrings measure 1/2 x 1/4 inch.