78 TOURQUOISE
most
value is blue, and most turquoise are net 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."
