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An Amazonite and Rock Crystal necklace. A single row of 15 large polished Amazonites hearts (28mm) with Rock Crystal (14mm) terminals attached to a silver ring and bar clasp. Length 17inches (43cms). AhR.S1 < BR>
Amazonite (sometimes
called
"Amazon stone") is a green variety of microcline feldspar.
The name is taken from that of the Amazon River, from which
certain
green stones were formerly obtained, but it is doubtful whether green feldspar occurs in the Amazon
area.
Amazonite
is a mineral of limited occurrence. Formerly it was obtained almost exclusively from the area of Miyask in the Ilmen
mountains,
50 miles southwest of Chehabinsk, Russia, where it occurs in granitic rocks. More recently,
high-quality crystals have
been obtained from Pike's Peak, Colorado, where it is found associated with smoky quartz, orthoclase, and albite in
a coarse
granite or pegmatite. Crystal Peak, Teller County, Colorado is a well-known locality for
crystals of amazonite. Some other
localities in the United States yield amazonite, and it is also found in pegmatite in Madagascar.
Because of
its bright
green colour when polished, amazonite is sometimes cut and used as a gemstone,
although
it is easily fractured.
For many
years, the source of amazonite's colour was a mystery. Naturally, many people assumed the colour was due to
copper because
copper compounds often have blue and green colours. More recent studies
suggest that
the blue-green color results from small
quantities of lead and water in the feldspar. (Hoffmeister and Rossman, 1985)
Please click here for ordering this necklace andLa Scala
jewellery on line
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An Amazonite and Rock Crystal necklace with heart amazonites AhR.S1
price: £150.00. |
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