The plural of ruby is rubies.
A ruby is a precious gemstone known for its vibrant red color. It belongs to the corundum mineral family and is one of the most valuable and sought-after gemstones. Rubies are prized for their intense red hue, durability, and brilliance. They are often used in jewelry, such as rings, necklaces, and earrings, and are considered a symbol of passion, love, and vitality. The finest rubies come from certain regions, including Myanmar (Burma), Thailand, and Mozambique.