_ -
 Ruby - Manik
Stone of Pinkish Red color, it generally occurs in crystal of six sided prism. Ruby is the Gemstone , used to enhance the powers of the Sun. An individual whose Sun is well placed in the birth Chart can never be unsuccessful.

The fiery color of the ruby symbolizes devotion and desire. It was once believed that the wearer of a ruby stone was blessed with health, wealth, wisdom and outstanding success in affairs of the heart. Ruby is the birthstone for July . Ruby gemstone must be worn by those whose Zodiac sign is Leo or the sun's positions in his horoscope is weak.
_ -
 Pearl - Moti
A quite, gentle shine and softness of the pearl has endeared it alike to Men and Women over the ages.

Moon is the presiding deity of the element water, and rules over the tides of the sea. The sphere of the Moon is the reservoir of rainwater and thus Moon is the ruler of plants and the vegetable kingdom.
_ -
 Red Coral - Munga
Munga, red and sindoori (vermilion) in color. The use of the coral in jewellery dates back to the Romans who considered it auspicious worn in amulets. Because of it auspiciousness, the coral, through not a precious stone, has been given a coverted place in Navaratnas.
_ -
 Emerald - Panna
Emerald is Velvety green in color, The most coveted emerald is that which is radiant and smooth and has neither cracks nor dots. Emerald harmonizes and strengthens the positive influences of Budha or mercury. These influences include intelligence, education, speech, teaching, learning, communication, confidence, writing, drawing, trade, humor, wit, discrimination, diplomacy, intellect and commerce.
_ -
 Yellow Sapphire - Pukhraj
Yellow sapphire harmonizes and benefits Guru or Jupiter, the largest graha (planet) in the solar system. It signifies knowledge, wisdom, virtue, fortune, justice, education, future, religion, philosophy, devotion, children, distant travel, spirituality, truthfulness, prosperity and charity.
_ -
 Diamond - Heera
The diamond which reflects the colors of the rainbow, is light and round but exhibits all its eight facets and is without lines or dots is best diamond. A defective or blemished diamond is set to cause great harm. Diamonds are also associated with luxuries, jewellery, wealth, beauty etc.
_ -
 Blue Sapphire - Neelam
Sani or Saturn represents longevity, discipline, authority, ambition, leadership, honesty, perfection, humility, elders, denial, delays, misery, adversity, accidents, conservatism and dutifulness. It's role is often symbolized as a servant.
_ -
 Gomedh - Rahu
Gomedha represents Rahu, the ascending node of the moon. It's natural significations include worldly desires, worldly benefits, laziness, gratification, and ignorance. It is by nature unpredictable and creates sudden changes and influences, rigidity and passion.
_ -
 Cat's Eye - Lahasunia Ketu
Cat's Eye harmonizes Ketu which is traditionally known as the "tail of the dragon". In Jyotish, Ketu is the descending node of Chandra (Moon). It's influences are similar to Mangal or Mars and include liberation, abstract thinking, asceticism, non-attachment, healing,moksha enlightenment, wisdom and that which is hidden.