TOUS MOTIF COLLECTION. ROSE VERMEIL SILVER & ONYX. DIMENSIONS: Size: 0.7 cm. CERTIFICATE OF AUTHENTICITY: All TOUS jewelry meets the certification and warranty standards for sterling silver and 18kt gold precious metals. This is reflected in the physical pieces through the hallmarks established in the Spanish Law on objects crafted with precious metals PERFECT FOR GIFT: This item is packed with its own gift box, making it ideal as Christma’s Gift, Mother’s Day, St Valentine’s. TOUS Motif Collection.