This is a 4℃ Presence diamond ring. Size: 6 Ring width: Approximately 2.0mm Markings: K18, 4℃ Presence mark Weight: Approximately 2.8g Accessories: None The diamond is nearly colorless and has good brilliance. The carat weight is unknown as there is no stone weight marking. The ring is not hollowed out on the back, so it feels smooth on the finger. It has been polished for sale, so it is in beautiful condition with no particular issues. The case in the image is for another ring and is not included. Material... Gold Size... 6 Stone... Diamond