Likely is the oldest shades of green, Malachite is the mineral based pigment, found in Egyptian tomb paintings from the Fourth dynasty. The Malachite limestone tile from Tilevera for clé reproduces this aristocratic green favored by royalty. Either hand painted or lithographed, these unique limestone tiles give you amazing range of various shades of green. The Malachite limestone tiles are available in 12″x12″ squares and suitable for kitchen and bathroom walls and floors. clé tile. Tilevera.