Rating: AB. Condition description: Main body : slight scratches. This is a classic Tiffany Co 1837 ring It features a simple band made of 18k yellow gold with a single round brilliant diamond This ring is perfect for everyday wear or special occasions. Classic Tiffany & Co. 1837 ring. Made of 18k yellow gold. Features a single round brilliant diamond. Perfect for everyday wear or special occasions. Comes in a Tiffany & Co. box.