|
Glittering
Stones >> Semi
Precious Stones >> Turquoise
Semi Precious Stone Turquoise
Turquoise is a beautiful blue opaque semi-precious
gemstone. The highest grades are "robin's egg blue,"
and the color of the blue sky. Inferior grades are greenish. Turquoise
that fades in color is also inferior. Turquoise is a phosphate
of aluminum with small quantities of copper and also iron. The
gem is slightly harder than glass.
Ancient and yet always at the height of the current fashion:
that is Turquoise for you. Its brilliant sky-blue belongs to the
all-time favorite trend colour in the world of fashion
and jewellery.
 |
Historical Facts of Turquoise
| Refractive index |
1.61 - 1.65 |
| Chemical Composition |
CuAl6(PO4)4(OH)8ยท4H2O |
| Crystal system |
Triclinic |
| Mohs Scale hardness |
5 - 6 |
| Luster |
Waxy to subvitreous |
| Specific gravity |
2.6 - 2.9 |
| Color |
Blue, blue-green, green |
| Ocurrence |
Afghanistan, Australia, India, northern Chile, Cornwall,
Saxony, Silesia, Turkestan, Tibet |
|
Gem Stone Turquoise Jewelry
| Turquoise Bracelet |
 |
 |
|
|
| Turquoise Earring |
 |
|
|
|
| Turquoise Necklace |
 |
|
|
|
| Turquoise Rings |
 |
|
|
|
|
