Himalayan Quartz can also have inclusions of other metals or minerals within, thus causing the color to change. The most popular variety is the “Smoky” Himalayan Quartz caused by natural radiation within the Earth. Iron can cause the color to change from clear, to yellow, and light pink (also known as Samadhi Quartz) which is believed to be from traces of phosphate or aluminum. Hematite inclusions give this mineral a red shade that is found towards the point of each crystal!