Quick Facts on Turquoise Stone
| Chemical Formula |
: | CuAl6(PO4)4(OH)8·.4H2O |
| Mineral |
: | Turquoise |
| Color |
: | Light to brilliant bluish green |
| Hardness |
: | 5 |
| Specific Gravity |
: | 2.60 - 2.83 |

Turquoise is
a blue to blue-green mineral of aluminum and copper, mainly, prized
as a gemstone in its polished blue form. It derives its name from
turc (Turkish in French) as it was transported to Europe through
Turkey. It is one of the oldest known gem materials. Turquoise is a
secondary mineral deposited from circulating waters, and it occurs
chiefly as an opaque, granular vein running through a host rock.
Ancient manuscripts from Persia, India, Afghanistan, and Arabia
report that the health of a person wearing turquoise can be assessed
by variations in the color of the stone and was also thought to
promote prosperity.
Turquoise is an important ornamental mineral for jewelry and adorned
the ceremonial dress of early native Americans. It is believed that
the gemstone guards against diseases and assists in tissue
regeneration, subtle body alignment and strengthening. It also
brings good fortune and attracts healing spirits. Delicate veining,
caused by impurities, is desired by some collectors as proof of a
natural stone. Rich deposits of turquoise are found in the regions
of Iran, southwestern United States, Africa, Australia, Tibet,
China, Siberia and Europe.