These include Basalts, schists, bekhen-stone (an especially prized green metagraywacke sandstone used for bowls, palettes, statues, and sarcophagi) [3] and gold-containing quartz.[4] The Narmer Palette, 3100 BC, is one of a number of early and predynastic artifacts that were carved from the distinctive stone of the Wadi Hammamat.