The Benefits of Nanosital: A Comprehensive Guide Nanosital or Sitall are synthetic gemstones, artificially grown or produced in the laboratory by synthesizing chemicals, minerals, and other synthetic materials, including silica, alumina, etc. It is an optically transparent polycrystalline material formed by crystallizing glass with a chemical composition. Compared to the original glass, it has higher physical properties. Compared to natural gemstones that have been formed over the years, these nanosital gems can be made available at any time, whenever needed, but when exactly these stones come into existence is still unknown.