Mica Properties and Meaning. Mica is a member of the Silicates family. It is a very shiny crystal and is a common companion for other minerals like Tourmaline, Aquamarine, Fuchite and Aventurine.Read more about Mica crystal healing properties below, with photos and desktop image!ica is a member of the Silicates family. It is a very shiny crystal and is a common companion for other minerals like Tourmaline, Aquamarine, Fuchite and Aventurine.