Amazonite is a vibrant green-to-blue-green variety of potassium feldspar mineral, specifically a microcline, that is highly prized for its unique, often mottled appearance and believed calming energy. Frequently referred to as the "Stone of Hope" or "Stone of Courage," it is popular in both jewelry-making and metaphysical circles for its alleged properties of promoting emotional balance, clear communication, and protection against electromagnetic pollution.