Purchased from Mitsukoshi. Since it was bought at Mitsukoshi, it was an expensive item at the time of purchase. The Mitsukoshi mark is engraved on the inside of the ring. The side diamonds also complement the emerald beautifully. I am selling it because I don't use it. Please see the images for the condition. Immediate purchase is OK, but if you have any concerns, please comment before purchasing. Size: Approximately size 12 Engraving: Pt900 0.41 0.07 Material: Platinum