Abhrak Bhasma is a herbo mineral formulation which is obtained by a systematic processing of Mica. Mineral drugs (Rasa Yoga) formulated by the branch of ayurvedic medicine knows as "Rasashastra" are the base of Ayurvedic Metallurgy. The mica is basically consist of various metals in oxide form as minerals in different ratio, were the percentage of the form varies based on the origin of base. The therapeutic application varies with respect to the composition of the mineral oxide based on the origin. In the Herbo-mineral treatments of Ayurveda, the key ingredient compose of bhasma, are the natural formulation consists of Nano Herbal metals. In formulation the Bhasma is used for both the doshas (bodily humors) and the disease to arrest the pathogenesis. The mica has curative property in chronic ailments. The process of manufacturing and standardization of Bhasma play the crucial role in defining the potency of the medicine with reduced toxic elements.