Vedic astrology or Jyotish is the "Science of Light", an ancient astrological discipline that originated more than 4,000 years ago during the Pre-Vedic civilization of ancient India. The "Rishis", a Sanskrit word meaning "seers" or high priests of the Vedas, cognized through transcendental visions, the connection between the celestial bodies of our solar system and the human body. 
The motion of the planets and their positions in relation to each other, acts upon us throughout our lifetime, just as the lunar phases push and pull the oceans and the seas.
According to the Vedic science of astrology, the planets and all the stars in our universe represent certain energies, and, in fact, do emit magnetic and electric fields. Vedic astrology held that each planet gives out its own, cosmic color, generating a particular energy and influence that propagates throughout the cosmos. The transmission of these colored rays through space, accompanied by the energy-giving properties of heat, magnetism and electricity, have an influence on the life of every living creature.

"Yat Pinde Tat Brahmande"

"We, as microcosm, are just a reflection of the outer macrocosm."

The location of the various planets during a person's birth, can be mapped scientifically through an astrological horoscope. 
According to it, certain planets will be well positioned, some will be unfavorable and some will give mixed results. 
Every person's life is therefore, the result of this cosmic design, this planetary arrangement seen in the sky at the time of our birth, which originated and resulted by activities and actions during our previous lives.
Vedic astrology opines that karma is not eternal and can be changed. There are several ways to balance or enhance our planetary karma. Its methods include meditation (the greatest balancing method), physical postures (yoga), medicine (ayurveda), wearing of gemstones, color therapy, mantras, prayers, rituals, herbs, food, etc. 

Vedic astrology deals with seven visible planets and two invisible ones: the SUN,  MOON,  MARS,  MERCURY,  JUPITER,  VENUS, and  SATURN, along with the two lunar nodes, RAHU (ascending lunar node) and KETU (descending lunar node). These nodes are the two intersecting points of the solar and lunar planes as seen from the earth.
Nine astrological gemstones are associated with these planets. Associated with the Sun is the RUBY, with the Moon is the PEARL, with Mars is the RED CORAL, with Mercury the EMERALD, with Jupiter is the YELLOW SAPPHIRE, with Venus is the DIAMOND, with Saturn the BLUE SAPPHIRE, with Rahu the HESSONITE GARNET, and with Ketu is the CAT'S EYE CHRYSOBERYL.   Associated with the nine planets are also the days of the week, different parts of the human body and different metals.

Someone might think that this correlation between the planets and its correspondent gems has no scientific validation and it is perhaps the result of blind superstition and religious belief.  However, there is a scientific truth behind Planetary Gemology. 
The specific studies on this matter has shown that the cosmic color spectrums emanated by the different planets, are very similar to the color spectrums of the correspondent gems. 
The cosmic energy of the planet is reflected on the human body through the gem and creates an effect by absorption and reflection of the rays and vibrations. 
The gem acts as a filter and produces good or evil effect, depending on the need of the body. 
Like the crystals used in radio technology are the fundamental constituents of transmitting, receiving and transforming invisible energy into sound, thus the crystalline structure of gemstones attract and condense the cosmic, planetary energies that rain from sky to earth and transform them for use by the human physiology.
By keeping the proper gemstones in touch with the body, profound and significant changes can take place overtime. 
To conclude, now more than any other period in history, where the knowledge and technology of natural gemstones has reached a peak, a divine science is again made available to anyone to fulfill mankind’s dream of life free from problems and negativity. Natural, very effective and magnificent gemstones that demand no will power or effort whatsoever, are available now to transform our lives radically.

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