Price is per piece
The high copper content of malachite (57%) makes it toxic. This makes it dangerous to mine, cut, or hand-polish malachite without proper protective equipment. Luckily, it's completely safe to handle rough and polished specimens.
Malachite is a secondary mineral of copper, which means it's formed when copper minerals are altered by other minerals. It occurs when carbonated water interacts with copper minerals, or when a solution of copper interacts with limestone. Malachite forms relatively quickly - bronze objects have been found at ancient Assyrian sites partially or wholly converted into Malachite! The green patina on weathered copper roofs and statues is a form of malachite. Because of its presence in nearly all oxidised copper deposits, Malachite serves as a prospecting guide for (and an important ore of) copper and is found in small quantities all over the world.