Topaz is a durable and lustrous gemstone prized for its wide range of colors, including blue, yellow, pink, orange, and the rare and valuable imperial topaz, which exhibits a rich golden-orange hue. Composed of aluminum and fluorine silicate, topaz ranks 8 on the Mohs hardness scale, making it suitable for a variety of jewelry applications. Naturally occurring topaz is often colorless or lightly tinted, with many vivid colors achieved through heat treatment or irradiation. Its excellent clarity, high brilliance, and affordability contribute to its popularity, while some varieties, like mystic topaz, display a rainbow-like iridescence through surface coatings. Topaz has long been associated with strength, protection, and emotional balance in various cultures and is also the birthstone for November.