The Sun is the sovereign planet of the zodiac, furnishing the light and heat upon which all life depends. The Sun's position in a person's horoscope determines his or her external appearance and public persona and provides the energy for one's personal power and influence over others. Gemstone ruled by the Sun are natural ruby.

RED is the cosmic color transmitted by rubies and other natural red gems.

In order to properly transmit solar energy, Sun stones must be flawless (eye-clean) and should be set in gold. 

The Moon governs the mind, and it's position in one's horoscope determines a person's habitual patterns of thought, feeling and  volition.  Gemstone ruled by the Moon are natural pearl, white coral &moonstone.

ORANGE is the cosmic color transmitted by pearls and other Lunar gems. 

Flawless (eye-clean) stones are required in order for Moon astral talismans to properly transmit beneficial Lunar energy. 

Mars is a masculine planet which radiates an intense and fiery energy. The position of Mars in one's horoscope determines relations among brothers, courage and strength, vitality and sexual drive. Gemstones  ruled by Mars include natural coral,  carnelian,  and other pink to red ocher colored gems.

As always, the use of fine quality gems, free of defects, is imperative for transmission of auspicious astral energy rays.

YELLOW is the cosmic color transmitted by coral and other ochre colored gems.

Mercury governs intelligence and therefore rules such fields as education, literature, communication, and public speaking. It is associated with the earth element, cold energy, the color green, agriculture, travel, and the nervous system. 

Venus is a beneficent planet which rules sex and sensuality, love and marriage, material comfort and luxury. INDIGO is the cosmic color transmitted by diamonds and other colorless gems. 

Venus transmits its cosmic energy through diamonds, quartz crystals, zircons, goshenites, white topaz, white sapphires, and other colorless gemstones with clear transparency.

Saturn is a powerful planet whose position in one's horoscope strongly influences one's work and employment, as well as obstacles one must overcome in order to succeed in one's chosen field.  Saturn is associated with the color blue

Saturn transmits its cosmic energy through blue sapphires, blue spinels, tanzanite, indicolite, iolite, amethyst and other natural blue to violet gems with transparent clarity.

Only flawless gems possess the capacity to properly transmit positive astral energy from Saturn.

Ketu is a mysterious planetary influence which, like Rahu, is malevolent and afflictive unless located in a powerful position or conjoined with a beneficent planet.

INFRA-RED is the cosmic color transmitted by cat's eye gems. Gemstones ruled by Ketu include Cat's eye chrysoberyl, beryl, apatite, tourmaline and other yellow to greenish-brown gems which display a strong chatoyant "cat's eye" light reflection on the surface and often within the crystal when cabochon cut.  These gems should also possess a high degree of transparency in order to properly transmit beneficial Ketu energy.