Greywacke palettes, such as this small rectangular one, are among the most commonly found personal possessions in Predynastic graves. They were found in the graves of both men and women, frequently near the face. These palettes were used to grind minerals into a fine powder for use as eye paint. Malachite, an ore of copper, was most commonly used for mascara, while galena, an ore of lead, was commonly used as the eye-liner kohl. The ends and sides of this pallete are very slightly convex. Two narrow grooves are incised following the line of the edge on one face only. Surface is worn and shows cut marks. The period of Naqada III is characterized by geometric shaped palettes (square and circular as well as rectangular).