Microcline is a potassium-rich member of the feldspar mineral group, characterized by its distinctive green to blue-green color. It often forms as prismatic crystals or as masses in igneous and metamorphic rocks. Microcline is commonly found in granite pegmatites and is a significant component of many igneous rocks. It exhibits a vitreous luster and has a hardness of 6 to 6.5 on the Mohs scale, making it suitable for use in jewelry and lapidary work. Its name is derived from the Greek words "micros" and "klino," meaning "small" and "to incline," respectively, referring to its typically flattened crystal habit. Microcline is prized for its aesthetic appeal and is sought after by collectors and gem enthusiasts worldwide.