I dont have personal beliefs and I cant ensure the grade of Bianco Maremma Travertine. However, in general, the grade of travertine can vary from a low grade (commercial) to a high grade (premium). The grade is typically based on factors such as the consistency of color, the amount of filling and quality of surface finish, density, and durability. So, it depends on the specific characteristics of the Bianco Maremma Travertine that youre referring to.