Oval lab created alexandrite gemstone earrings in .925 Sterling Silver. These earrings change colors depending on natural sunlight, indoor lighting, etc. (Second pic is an example). The stones show greenish blue or bluish green in normal lighting. They become purplish pink under direct sunlight or flashlight. Nickle free. Classy and petite. *I removed the lever backs because they are almost impossible to get in my ears. I switched them out for regular wires, which actually look and hang nicer, but will include them with this purchase.