Material: Platinum Decoration: Other stones Black Opal 2.82ct Diamond 0.75ct Platinum Pt900 Size: 10.5 This is a natural black opal. It has an outstanding play-of-color effect, a deep and unique color, and a different expression depending on the angle, so no two are alike. You can enjoy the mystical rainbow colors with this ring. This is a gem that I confidently recommend for its shape, color, and play-of-color effect. The base color is bluish-gray, but green appears depending on the angle. The back side, when exposed to light, appears orange. Dirt is also clearly visible (^_^;) *However, cleaning it could damage the stone, so it could not be cleaned. The timeless appearance is not only for everyday use, but also makes you feel enchanted just by looking at it. It allows you to fully enjoy the play-of-color even under the fluorescent lights in the room. The diamonds on the sides also enhance the sense of luxury. The size is a substantial 2.82ct, making it suitable for a wide range of occasions, from casual to formal. [Material] Platinum 900 (stamped) [Stone Type] Natural Black Opal, Natural Diamond [Stone Size] Opal 2.82ct (stamped) Diamond 0.75ct (stamped) [Size] 10.5 No case included. It has been polished before listing, but due to the characteristics of the soft stone, it could not be polished with a machine using water, nor could it be cleaned after removing it from the setting. Images have been taken from various angles and locations, but the color of the stones may appear slightly different from the actual product. Please understand this before purchasing. The photos are taken with magnification, and there may be scratches that cannot be fully captured. Please refrain from purchasing if you have any concerns. Material: Platinum Color: Blue Ring Size: 10 Accessories: Box