Amazonite is a green to turquoise variety of feldspar with the chemical formula KAlSi₃O₈. It is known for its vibrant blue-green color, which can range from pale green to deep turquoise. Amazonite often features a blocky, crystalline structure and can sometimes exhibit white streaks or mottling due to inclusions. It has a Mohs hardness of 6 to 6.5, making it durable enough for jewelry, beads, and cabochons. Amazonite is primarily found in regions such as Brazil, Russia, and the United States (Colorado). It is often used for ornamental carvings and gemstones due to its striking color.