Jupiter, a planet having sky elements in it, plays a vital role in influencing the intellect wisdom of a man. Jupiter is called Bruhaspate also. Jupiter is also the significator of writing, publishing, Tantra-Mantra, Vedas and other classics, wisdom, moral conduct and gentility. Yellow sapphire is a very attractive and glowing gem. It is pleasing to see a pare piece of Yellow sapphire. Yellow sapphire is found in mines. According to chemists, it is simply a silicate that consists of aluminum and fluorine. Pure silicate of Yellow sapphire is as transparent as pure water. This transparent silicate is called white sapphire. But only the Yellow sapphire is considered to be the Gururatna. Approx weight will be 3 to 4 K.