This Shungite Polished Slab is the perfect EMF diffusion device to set electronic devices like a cell phone or router on. It can also be used to charge crystals and water by setting them atop the Shungite slab (would make a great coaster to charge water!). (Quartz crystal not included.)
Shungite is well known for its protective qualities regarding EMFs and is a great stone for water purification.
Shungite is composed of primarily amorphous graphite (carbon), crystalline silicate particles, and a complexity of other minerals such as silicon, aluminum, magnesium, iron, sulfur, calcium, and phosphorus distributed throughout the stone.
Carbon molecules (60-98% of shungite's composition) are known to gather into hollow, globular molecules known as "fullerenes". There are many health benefits associated with fullerenes, a few including anti-aging, anti-viral and antioxidant.
For more information on Shungite please see this article.