Tiffany and Company bow brooch 18 karat and sterling silver twist rope design vintage item materials sterling silver .925 yellow gold , 18 karat sterling silver bow brooch with 18 karat accents.The retired piece is beautiful crafted with a twist cable or rope design into a bow. The 18 karat accents are wrapped at the tales of the bow-so nice ! Brooch measures 1.25 inches wide x 7/8 inches tall, fully hallmarked , and in excellent condition.brooch is a classic Tiffany piece which will never go out of style .specs metals sterling silver .9 to 5 and 18 karat yellow gold.