These handmade Malachite studs are created from Sterling silver sheet. I have set them with beautiful 6 X 8mm Malachite cabochons. These studs can be worn vertically or horizontally. They are the perfect size for young girls as well as anyone who likes a smaller earring. Wearing earrings, rings or necklaces of malachite helps to improve concentration. Malachite is formed over hundred (thousands) of years as water seeps through copper formations. The process that turns copper green when exposed to water is the same process that gives malachite its green color. It is a chemical reaction between the actual copper ore and oxygen and hydrogen.