White and Brownish-Red Corundum – A mineral composed of aluminum oxide (Al₂O₃), known for its exceptional hardness and durability. White corundum is pure and ideal for precision applications, while Brownish-Red corundum contains impurities that enhance its toughness, making it perfect for industrial and abrasive uses. Widely used in jewelry, industry, and advanced technologies, it is an effective solution for cutting, grinding, and high-quality finishing.