Charmsoflight.com tells us that:
Turquoise is an 11th Anniversary gemstone. It is associated with the Heart Chakra, the Throat Chakra and the Third Eye Chakra. Blue Turqouise is the birthstone for December, and for the zodiac signs of Scorpio, Sagittarius, Aquarius and Pisces. It is associated with Venus and Neptune, and the elements of Earth, Air and Fire.
It can be used for the healing properties of Purification, Serenity, Protection, Wisdom, Balance, Strength, Friendship, Love, Positive thinking and Sensitivity.
Turquoise dispels negative energy, protects against outside influences or pollutants, balances and aligns all the chakras, instilling inner calm. Turquoise promotes self-realization and assists creative problem solving. It is a symbol of friendship, and stimulates romantic love.
Yellow Turquoise is formed by the inclusion of iron and helps to connect with spirit and brings the energy of the sky down to earth."
Firestone Gems tells us:
"Turquoise: The stone of communication, encourages enthusiasm, inspiring new projects and bringing to light undiscovered artistic abilities...provides understanding and encourages attention to detail while attracting prosperity and success. The coppery matrix provides energy, prized as a powerful talisman with healing properties...helps balance the blue throat chakra, enhancing the ability to communicate while increasing resistance to viruses, helping to relieve sore throats and allergies."