What is Crystalline Nano Silver? Crystalline Nano describes the nature of the silver: silver particles which are less than 100 nanometers. Silver particles under 100 nanometers can be absorbed very quickly by the body and even through the skin. There are no salts or proteins used in our manufacturing process, ensuring that the end product is only nano sized silver particles in distilled water. Because of the purity and particle size of Organa Silver, it is a safe and effective remedy to many illnesses.