Navaratna refers to the nine gemstones related to the nine planets used in Vedic astrology. The word nava means 'nine' and ratna means 'gem' in the Sanskrit language. Navaratnas are considered auspicious and believed to give the wearer Good Health, Prosperity, Happiness and Peace of Mind.
 
This is made up of Panchaloham. Panchalokam is the perfect blend of gold, silver, copper, lead and iron. All metals have their own specificity and power. We get the power and the uniqueness of those metals when we wear them as ornaments on our body.

*Gold: In the Tantra Yoga, it is said that when we worship God wearing gold, our requests reach immediately to god.
*Silver: Silver has the power to control the emotional waves of humans. *Copper: Improving brain function.
*Lead: Stimulates spiritual growth.