This green stone displays the topography of a secret garden, where every path is a circle and every circle a home! Malachite resembles the leaves of the mallow plant, and is opaque, green-banded mineral that crystallizes in the monoclinic crystal system. It forms botryoidal, fibrous velvet structures, or stalagmitic masses, in fractures and deep, underground spaces, where the water table and hydrothermal fluids provide the means for chemical precipitation. Malachite, an ore of copper, occurs frequently in association with azurite and has been used as a mineral pigment in green paints since antiquity. Raw unpolished stone is highly valued by collectors and crystal practitioners as a "Stone of Transformation". As a stone of transformation, it is believed to help release old patterns and encourage positive change. It is also well-known as a "guard stone" to absorb negative energy and electromagnetic pollution. In the domain of astrology, it is often recommended for people with sun sign Scorpio and Capricorn. Raw malachite must be handled with care since it is toxic due to the copper content.