One black tourmaline in quartz crystals towers These were natural earth gemstones that were cut and polished to a point. they have a beautiful shiny polish and they are about 4 inches tall and they are about 3/4 inch diameter. Black Crystal tower Terminating quartz is one of the most powerful energizing crystals because they can both transmit heat and electricity. If you put the crystal wand on your desk or near your bed, you can get clean air as it changes the ions from negative to positive. White one is sold