This is a platinum 900 ring with a 2-carat diamond. The size is large, approximately size 19 or 20. It's difficult to see in the photos, but when sunlight or light shines on it, it sparkles beautifully, making your fingertips look glamorous. The widest part is about 1.5 centimeters. It has not been polished. There are scratches on the platinum part, so please understand that this is a used item. If you need the exact weight, I can measure it with a digital scale, so please let me know.