Slate colors

What is Slate?    Natural slate is a deeply metamorphosed natural stone. As a result of intensive tectonic activities in the geological history, there left abundant reserve of slate in China, with a variety of physical and chemical properties that generate different slate colors and textures. General color categories include black slate, green slate, red slate, grey slate and yellow rustic slates.  The slate has been recognized as ideal building materials in recent years as it is natural appearance, fair durability, and cost effectiveness.