Malachite is a mineral that is popularly used in jewelry, decorative objects, and even in cosmetics due to its beautiful green color. However, there has been some concern regarding the possible toxicity of malachite, especially when it comes to putting it directly on the skin. Malachite is a copper carbonate mineral, meaning that it contains copper, which can be toxic in certain forms and at high concentrations. When malachite is in its raw, unpolished state, it can release small particles of copper dust into the air when it is handled or touched. If these particles are inhaled or come into contact with the skin, they can potentially cause skin irritation, respiratory problems, or other health issues. When the “Wizard of OZ” was filmed the Wicked Witch wore green makeup that was made of Malachite that was incredibly toxic and when she was in full makeup she had to eat and drink out of a straw to keep the copper from getting into her mouth - likely not great to have on direct contact with the skin for an extended period of time. That being said, the risk of toxicity from wearing malachite jewelry is relatively low. Most malachite jewelry is coated with a protective layer to prevent direct contact with the skin. Additionally, the amount of copper that can be absorbed through the skin is generally very small. However, it is still recommended to handle malachite with care and to avoid prolonged exposure to it.