Watch crystals are vital for safeguarding the watch face and are made from three main materials: acrylic, mineral glass, and sapphire. Acrylic crystals are the most affordable and resistant to shattering but can scratch easily. Mineral glass is tougher and more scratch-resistant than acrylic, making it a popular choice for mid-range watches due to its balance of durability and cost. Sapphire watch crystals are known for their superior hardness and clarity, offering the highest level of scratch resistance and are typically used in luxury watches. The type of crystal significantly influences the watch’s durability, appearance, and price, catering to diverse user needs and preferences.