They are not glass or man-made.
Wear the Crystal in upper chest area of the body to be picked up by your energy centers.
The turquoise gemstone is the symbol of friendship and brings peace to the home and good fortune to the owner. The turquoise stone is believed to carry with it great truth and wisdom inside it. The turquoise gemstone is a stone that represents self-realization and is an aid in analytical thinking as well as creative energy.
Too much turquoise can cause one to become over analytical, fussy, and egocentric, allowing one to let logic guide decision-making. Too little turquoise can cause one to become secretive, closed off, confused, sneaky, and even paranoid.