Every astrological planet is related with a particular gem/s. For astrological purposes, the gem is embedded in the ring/ pendant in a way that the bottom is open, enabling the gemstone to touch the body. A gem having a good luster, and clearity in colour brings good luck and protection.
The gemstones absorb and reflect the planetary rays or vibrations. Thus, gems relate to specific energy waves. Gems associated with each planet have varying wavelengths and act as an amplifier and cosmic filter, abstaining harmful rays from affecting the body. Gemstones even supplement the deficiencies in the body which helps in improvement of health, temperament and energy.