Birds and Nature Vol. 11 No. 4 [April 1902]: Illustrated by Color PhotographyVarious
History
Birds and Nature Vol. 11 No. 4 [April 1902]: Illustrated by Color Photography
Various
Birds -- Periodicals; Natural history -- Periodicals
It is thus probably always of eruptive origin. Pyrope is a
characteristic constituent of the diamond-bearing rock of South Africa,
and is the stone known in trade as “Cape ruby.” These garnets afford
many excellent gems. The home of the pyrope, however, is and has been
for many centuries, Bohemia. Here it is found in many localities, but
chiefly in the northwestern part, near Teplitz and Berlin. The garnets
are found in a gravel or conglomerate of Cretaceous age, resulting from
the decomposition of a serpentine. Sometimes, however, they are found in
the matrix and often associated with a brown opal. They are found by
digging and separated by washing. Though of good quality the scones are
small, those as large as a hazel nut being found but rarely. Although
the Bohemian garnets have been known for many centuries, the industry of
mining and cutting them on a large scale is said not to have assumed any
special proportions until the advent of foreigners to Karlsbad. In this
way a knowledge of the stones went out to other countries, and a demand
sprang up which has led to the establishment of a great industry and
made Bohemia the garnet center of the world. There are over three
thousand men employed at the present time simply in cutting the stones,
and if to these be added the number of miners and gold and silver smiths
occupied in the mining and mounting of the garnets, it is estimated that
a total of 10,000 persons are engaged in the Bohemian garnet industry.
The stones are used not alone for jewelry and for ornamenting gold and
silver plate, but also extensively for watch jewels and for polishing.
Excellent pyropes are found in Arizona, New Mexico and Southern Colorado
in our own country. They occur in the beds of streams as rolled pebbles,
and often associated with the green chrysolite or peridot of the
eruptive rock from which they came. They are especially abundant about
anthills, being removed by the ants because their size stands in the way
of the excavations of the busy insects. The name pyrope comes from the
Greek word for fire, and is applied on account of the color of the
stone.
Of quite similar origin is the name carbuncle, a term applied to nearly
all fiery red stones in Roman times, but now used to designate garnets
cut in the oval form known as cabochon. The word carbuncle comes from
the Latin word carbo, coal, and refers to the internal fire-like color
and reflection of garnets.
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