The Goldsmiths Jewellery Collection offers both classic and contemporary designs, meticulously crafted from the finest of materials, the collection provides vintage and modern styles that will be a welcome addition to your jewellery ensemble. Find your perfect accessory. This 20-inch Diamond-cut Belcher chain is made from 9ct Gold and features a spring ring clasp for assured security. This necklace proves that understated style can have a huge impact. Chain Width – 2. 6mm Explore the full Goldsmiths Jewellery Collection.