Guided by the mighty planet Saturn, Blue Sapphire (Neelam) stone, is one of the central gemstones within the Navratna (9 grahas)
A ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires.