Ruby is considered as the king of all gems and represents passion, emotion, love, and courage. This gemstone is available in different shades of red ranging from bluish and purplish red. It was believed that a fine red Ruby can bring good fortune to its owner.
This gemstone measures 9 in the Mohs hardness scale, making it a really durable and tough stone. Ruby is also the second hardest natural gemstone, next to Diamond. The strength and beautiful red fluorescence make the gem valuable not only in producing pieces of jewelry but even in medical instruments, lasers, and watchmaking.