Ruby is a precious gemstone that is known for its deep red color. It is the birthstone for July and is associated with the zodiac signs Leo and Scorpio. Ruby is a corundum, which is a mineral that is also found in sapphires. However, rubies are the only corundum that is red. The color of ruby comes from the presence of chromium impurities. The best rubies come from Myanmar formerly Burma, but they are also found in other countries, such as Thailand, Sri Lanka, and India. A minimal custom cursor with Minimal Ruby.