Various beliefs about turquoise are shared by Tibetans and Tibeto-Nepalese. In many Asian societies the color blue is considered auspicious and protective; blue turquoise, therefore, possesses these qualities. Worn in a ring, it assures a safe journey; worn in the ear it prevents reincarnation as a donkey; appearing in a dream, it is auspicious; when found, it brings the best of luck and gives new life (in contrast, it is not considered lucky to find gold or coral); when changing its color to green, it indicates hepatitis, yet at the same time it draws out jaundice. Most importantly it can absorb sin. Strings of prayer beads should include turquoise. In fact, when worshipping the popular goddess Tara in her green form, because of the color association, it is desirable to do so with a rosary entirely composed of turquoise beads.
There exists as well the concept of living and dead turquoise. Living turquoise has a healthy blue color, whereas dead turquoise has turned either white or black. In the natural aging process of turquoise, exposure to light and body oils darkens the color, eventually turning it black. Tibetans compare this to human aging and death. Wearing "living" turquoise is therefore very desirable, as it will give long life to the wearer.
In general terms turquoise is a symbol of the blue of the sea and the sky. Infinity in the sky speaks of the limitless heights of ascension. The stone is opaque as the earth, yet it lifts the spirit high, laying bare to us the wisdom of both the earth and the sky. It is old, yet young.
Turquoise has also been held as a sacred stone by ancient cultures other than the Tibetan. It was sacred in Egypt along with malachite and lapis lazuli. It was sacred to the Persian culture, where it symbolized purity. American Indians believe it to be a protector and guardian of the body and soul. Gypsies wear this stone in their navels, believing it to be good for everything.
The endless knot is a closed, graphic ornament composed of right-angled, intertwined lines. It is conjectured that it may have evolved from an ancient naga symbol with two stylized snakes.
This latter image signifies the dramatic interplay and interaction of the opposing forces in the dualistic world of manifestation, leading to their union, and ultimately to harmony in the universe. This fact is amply reflected in the symmetrical and regular form of the endless knot.
The intertwining of lines reminds us how all phenomena are conjoined and yoked together as a closed cycle of cause and effect. Thus the whole composition is a pattern that is closed on in itself with no gaps, leading to a representational form of great simplicity and fully balanced harmony.
Since all phenomena are interrelated, the placing of the endless knot on a gift or greeting card is understood to establish an auspicious connection between the giver and the recipient. At the same time, the recipient is goaded to righteous karma, being reminded that future positive effects have their roots in the causes of the present. This is because the knot represents a connection, a link with our fates, binding us to our karmic destiny. Not surprisingly, this is one of the most favorite symbols in Tibetan Buddhism, and often occurs independently on its own.
Since the knot has no beginning or end it also symbolizes the infinite wisdom of the Buddha.