Alexandrita Stock 2 Quartzite is a versatile stone that can be used both indoors (in kitchens and bathrooms) and outdoors (in paving patios and gardens). Quartzite is a metamorphic rock that originates as sandstone, and usually varies in color from white to gray. Because it is a very strong stone, it is commonly used in construction of floors, walls, roofs, and stairs. It is also a popular choice in home decoration because of its natural beauty. Alexandrita Stock 2 Quartzite is known for its ability to add both beauty and functionality to the inside or outside of a home.