Simple design ring with a diamond. - Size: Size 11 - Design: Simple ring with a diamond This ring is stamped with "Pt950". However, it was received as a gift, and the authenticity of the material (whether it is genuine Pt950) has not been verified by a professional organization. Therefore, please refrain from purchasing if you are looking for a guaranteed K18 material. We cannot guarantee the material. Please understand the above before purchasing. Thank you for viewing.