As the mineral of rubies and sapphires, corundum can be fashioned into an array of shapes to highlight its stunning colors. Traditional shapes like ovals and rounds mix with creative cuts like trillions and briolettes. Well-cut corundum has facets placed with precision to maximize brilliance. The most popular shape is the classic round brilliant, with 58 symmetrically arranged facets. Oval shapes work well for corundum, elongating the stone for a glamorous look. Square cushion cuts make use of trimmed corners for a smart, modern appearance. For accents, the trillion’s sparkle and baguette's sleek shape add flair. Fancy shapes like hearts and pears show creative cuts. With its durability and clarity, corundum suits any inspired shape.