Pigeon blood rubies are considered to be of the highest quality in the ruby market due to their vivid red color, often described as a deep, rich, and intense hue with a hint of blue. The term “pigeon blood” is used to describe a specific shade of red that is highly prized among collectors and gemstone enthusiasts. In addition to its color, a high-quality pigeon blood ruby will also have excellent clarity and a desirable cut, which can enhance its overall beauty and value.