This holder is was created to use mainly on the night stand while charging your phone at night. I created it because I wanted to neutralize the EMF that I was receiving from my phone then. It is made of solid wood and acrylic paint using an acrylic pour method that I love! It measures 7.5" x 4". There are never two that are the same and the paint feels like it creates on its own. I added the Shungite to neutralize EMF levels while charging the phone. It goes up drastically at that time. Please note that Shungite is believed to neutralize EMF levels. There are a total of eight Petrovsky AA Shungite pieces on this holder. Each has been fully tested for conductivity with a multimeter. Shungite improves mental clarity and purifies our emotions and intentions. It is said to be capable of clearing the energy of an entire room. At the same time, it offers a level of protection against outside forces, such as EMF. Due to this, many wear or keep it near the computer for this purpose. Each of the these stones are unique and may be slightly different. Small flaws are completely normal on Shungite and true Shungite will leave black when rubbed. I have tested all of the Shungite that I use. Each and every piece was tested for conductivity with a multimeter. Petrovsky Shungite Carbon Content: Petrovsky Shungite falls between Elite (Noble) Shungite (up to 98% carbon) and Regular (Black) Shungite (64% carbon), containing about 70-80% carbon. Appearance: It has a distinctive dull gray appearance, described by Shungite Masters as being between Elite's silvery shine and regular Shungite's black. Some sources describe it as having a "silvery, glossy overflow". Properties and Uses: Water Purification: Like other types of shungite, it is used for water purification and is believed to have antibacterial properties. EMF Protection: It is believed to offer protection against electromagnetic fields (EMFs) from electronic devices. Healing Properties: Proponents claim it aids in healing, reduces inflammation, and balances energy. Meditation: It is believed to promote grounding and concentration during meditation. Fullerenes: Shungite contains fullerenes, a unique form of carbon with antioxidant properties.