The tusk represents human strength, and the ancestral connection with the animal's spirits, those who the humans, in the cradle of civilization, had to face to survive. The tusk of the defeated animal was worn, so its spirit was now at the service of the man.
Carrying it in the neck symbolizes the ability to overcome adversaries, and the men's power to prevail in any situation. It's believed that it makes the inner strength arise, that connects us with elder powers and makes us invincible. It also increases the sexual appeal.
The word Turquoise is very old. It derives from french "Pierre Turquoise", meaning Turkish Stone. It is believed that this comes from a confusion, because there aren't Turquoises in Turkey, but the first dealers who brought the gemstone to Europe were Turkish. The Turquoises were found in Iran, but they were associated with Turkey. Even the best quality Turquoises are fragile stones, with a maximum hardness level just below 6 in the Mohs scale, slightly less than a normal window glass. Turquoise boosts communication, eloquence and creativity. It is known as the joy and welfare stone. It absorbs negative energy. It helps see life favourably and with good mood. Amulet for travelers. Useful against the evil eye. It helps to increase attention and clarifies ideas.
The turquoise is linked to the zodiac sign virgo.