A ruby is a precious gemstone known for its vibrant red color, which can range from deep crimson to lighter pinkish hues. It is a variety of the mineral corundum, the same mineral group that includes sapphires. The red color of rubies is due to the presence of chromium. They are one of the most valuable gemstones, prized for their rarity, beauty, and durability. Rubies are typically found in regions like Myanmar (Burma), Thailand, and Sri Lanka.
