What grade is Viet Nam's Quy Hop Bluestone BlueStone? Ask Other Questions
Vietnams Quy Hop Bluestone is not assigned a specific grade. The term blue stone refers to a type of bluestone characterized by its blue-gray color. The grade or quality of the bluestone may vary depending on factors such as its porosity, density, and overall appearance. The specific grades may be determined by individual stone suppliers or industry standards but are not universally defined for Quy Hop Bluestone.