This is an atelier el K10 sapphire ring. Size: 9 The box has been disposed of, and the ring will be shipped alone. K10 hallmark present (see photo 1) Photo 3 shows the back of the ring. The stone is a calm green sapphire, and it appears darker in reality. (It has a natural feel, so it may not be suitable for those who prefer sparkle) It sparkles with a whitish hue when worn. The color of the stone is not uniform, and I believe it's close to a one-of-a-kind ring as I was able to choose it. I vaguely remember buying it for around 12,000 yen. Please ask any questions in the comments. *I think there is some discoloration, so the price reflects this.