Our experience shows it that Gemstones should be
advised for planets that assume a key role in the chart and cast a
benefic influence on the individual.There are 2 main systems for
choosing personal stones. The ancient Eastern, Ayurdevic system and
the modern Western System. There are also other systems that you may
choose outside of the Eastern/Western systems such as personal
preference for color, the qualities of each crystal and random
selection etc.In early Ayervedic and Tantric texts, certain gems
were related to specific parts of the body. Nine stones are related
to the planets and nodes of the moon. This method is often used by
people who are having problems with a body part.Another Eastern
method of choosing your stone is by finding the stones that are
linked to your sign of the zodiac.The nav-ratna(nine gems) are
divided into two groups:-Precious and Semi-precious.Diamond, pearl,
Ruby, Blue-Sapphire and Emerald are precious gems whereas hessonite,
yellow sapphire, cat’s eye and coral fall in the category of
semi-precious gems.It is always advisable to wear the rings of
different gems on different fingers . As a general rule, the ring
finger is the best for wearing rings, but as each finger is related
to a particular planet, the ring should be worn on the finger
connected with the planet.