|
This mineral is remarkable among all the gem minerals in not being transparent and in never occurring in the form of a fine crystal. In composition turquoise is a hydrus phosphate of aluminum. The gem is rather soft; its grade is No. 6.
Sources of Supply
The ancient supply of fine turquoise came from a mine not far from Nishapur, in Persia, and the mining of the gems in that locality is said to have supported the entire population of the town. The mines must be very ancient. A description of one was written in the year 1300 A.D. and according to a popular tradition, one of the mines, known as Isaac's Mine, was opened by Isaac, son of Abraham. At the present time most of the turquoise come from New Mexico. These mines also are very old and were first worked by the Spaniards, it is said, by consent of the Indians, who still inhabited the land.
Color
The predominating color of the turquoise is green, while on the other hand the color of most value is blue, and most turquoise are not free from the imperfection of turning green by exposure during the course of time.
Turquoise are sometimes artificially stained, but this can be easily detected, and is of little interest to the real admirer of this interesting gem.
Owing to their early discovery the turquoise has always been prized by Eastern people, and amongst oriental people is still considered of great value. Superstition, as usual, mingles in this estimate of value, and it is stated by good authority that turquoise are still used in the East as a remedy for dyspepsia and insanity. It has also been supposed since earliest times to bring its wearer good fortune, and one of the proverbs of the Oriental is, "A turquoise given by a loving hand carries with it happiness and good fortune." |
You are here:
JJKent Home >>
Precious Stones Guide Vol 3
>> All About the Popular Gem Turquoise
| <<Moonstones or Felspar | All About the Chrysolite: Peridot and Olivine>> |