Shungite cellphone EMF protector. Measures 1.5CM by 2.5CM. Shungite has electricity conducting properties. These Shungite properties are also known to aid in the inhibiting of EMFs, or electromagnetic fields, that are the result of electromagnetic fields, that are the result of electromagnetic radiation. Electromagnetic fields are created by electronic devices. Common electronic items such as laptops, cell phones, computers and tablets all put out EMFs. Placing Shungite at the base of a computer, microwave or around your various home electronic devices will not interfere with their operations, but will block out some of their free radial output.