Libethenite is a rare mineral that is mostly found in copper deposits. It is named after its discovery locality of Libethen, which is now known as Hnúšťa in Slovakia. Although there are no direct synonyms for Libethenite, it is often grouped together with other copper minerals because of its similarity in color and composition. These minerals include malachite, azurite, chrysocolla, and dioptase. Libethenite can also be referred to as a copper phosphate mineral because of its chemical composition, which is a combination of copper and phosphate ions. Despite its scarcity, collectors and enthusiasts covet Libethenite for its stunning green hue and unique crystal formations.