Natural Quartz ( Dur-E-Najaf ) 53.90ct (QZ011) is made of the two most abundant chemical elements on Earth.Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon–oxygen tetrahedra .Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral.