Azurite, a dark blue copper mineral, and malachite, a rich green copper mineral, are sometimes found in a combination called azurmalachite. Both are secondary minerals found in weathered copper deposits. When they undergo a process known as metasomatism, these two minerals can alter to become each other and when they form in proximity there can be intergrowth. The combination (as shown in our specimen image) exhibits the best of both minerals creating a vibrant, beautiful gemstone. This rich green and blue mineral combination is popular with lapidarists and collectors.