Color: Purple Material: Gold T750 Ring, Amethyst? This is a very old item, and the details are unknown, but it has a T750 hallmark. There is no carat marking. Judging from the color, I think it might be amethyst, but it could be synthetic, and since it's from the Showa era, the details are unknown. Gemstone size: Approximately 1.2 cm wide, 1.5 cm long, and 0.5 cm thick. Total weight: 8.8g. Please understand that there may be some errors due to amateur measurements. Please purchase only if you understand that this is an old item. There are no pets or smokers. If you have any questions, please comment. Ring size: Size 11