Vintage ring 18k gold plating and a synthetic ruby. There is a stamp on the back but I can’t read it. I thought it was plated but who knows 🤷🏻‍♀️ The ring size is 9 1/4, the inner diameter is 19.5 mm. The weight of the ring is 2.9 g. The ring looks like new. The condition is perfect. This is a unique ring with a timeless bezel set