Mushroom stone slate is made of slate,quartzite,normally used in Wall cladding indoor or outdoor,can be used in all kinds of colors like green,black,rusty,white,yellow,red,pink etc. The standard sizes are mostly at 20x10cm, 20x8cm, 20x6cm 40x20cm, 30x15cm, 30x10cm, 30x5cm, 20x5cm, 10x5cm and thickness is 1-2cm, 2-3cm.