Geology of Manitoba Mineral properties Photos Crystal Amethyst June 17, 2019November 22, 2019 MPDA1 Crystal amethyst is composed of the quartz mineral (SiO2), along with citrine and rose quartz.Quartz is made of the elements silicon and oxygen.Quartz is one of the most abundant minerals found on earth.Learn more about crystal amethyst and quartz mineral here.
