Ruby (Manik) is the precious gemstone belonging to the corundum mineral family.It is found in pink to red colours in different shades. Ruby is considered the king of queen. It is the most beautiful, most expensive and the most expensive gemstone. Natural Rubies are worn for improving leadership quality, better financial and social status, good luck and positive energies. Ruby is a birthstone for July. It is connected with the sun in horoscopes and contains all the qualities of the sun. The hardness of this beautiful gemstone is 9 on the Mohs scale. White metal like silver, white gold are avoided for ruby jewellery.