This Retro 3Ct Round Cut Lab-Created Diamond Black Panther Ring in size 12 features a black round diamond as the main stone, set in platinum plating with black onyx secondary stones. Handmade in India, this vintage ring is perfect for various occasions such as engagement, weddings, anniversaries, and birthdays. The black panther shape and theme add a unique and stylish touch to this nickel-free ring, making it a charming accessory for any man looking to add some flair to their jewelry collection.