Syrias Shells Reef Beige Limestone is a natural stone typically used in construction and architectural applications. It does not have a specific grade like grades given to students in an educational setting. The quality and grade of any specific shipment of Shells Reef Beige Limestone can vary based on factors such as color consistency, surface finish, and structural integrity. It is important to consult with a supplier or contractor to determine the specific grade and quality of the limestone being used.