Phantom quartz
Phantom quartz is a variety of quartz, or "rock crystal", that, over the course of millions of years, forms over earlier rock crystals that already existed. It takes its name from the particular structure of its crystallization: each crystal displays the outlines of numerous smaller crystals, known as phantoms. It is found in Austria, Brazil, Madagascar, Switzerland, and the United States.
Like regular quartz, the chemical composition of phantom quartz is SiO2, and its hardness is 7. The available forms of phantom quartz are crystal groups, single crystals, crystal points, touchstone, tumbled stones; as a jewelry gemstone, usually found in the form of a pendant. The crystallization is a trigonal crystal.
Astrological powers attributed to Phantom Quartz
Although Western tropical astrology has varied beliefs concerning Phantom Quartz, which should be listed here, but the Asian Sidereal Astrology known as Jyotisha does not recognize phantom quartz in any particular manner, and such quartz varieties do not fit into any of the gem categories referred to in the ancient Sri Navaratna system of Vedic birthstones.