Tiffany & Co. By the Yard necklace. The diamond carat is 0.21 carats. The necklace length is approximately 41.5cm. Made of 750 (K18) yellow gold. The clasp plate is engraved with Tiffany & Co., Peretti, 750, and an 8-digit serial number. The diamond is set with a very brilliant stone. Purchased at Isetan. Worn a few times and stored. Overall in beautiful condition. The certificate of authenticity was not found and is not included, but the diamond is triple excellent. The only included accessory is the box in the image.