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Treasurers
Does prospecting for gold or hunting for
gemstone deposits sound like fun?
Diamonds are
specifically renowned
as a material with
superlative physical
qualities; they make
excellent abrasives
because they can be
scratched only by
other diamonds,
borazon, ultrahard
fullerite, rhenium
diboride, or
aggregated diamond
nanorods, which also
means they hold a
polish extremely well
and retain their lustre.
Approximately 130
million carats (26,000
kg) are mined
annually, with a total
value of nearly USD
$9 billion, and about
100,000 kg (220,000
lb) are synthesized
annually.[3]
Turquoise is an
opaque, blue-to-
green mineral that
is a hydrous
phosphate of
copper and
aluminium, with the
chemical formula
CuAl6(PO4)4(OH)
8·4H2O. It is rare
and valuable in
finer grades and
has been prized as
a gem and
ornamental stone
for thousands of
years owing to its
unique hue.
Gold Panning,Turquoise,Gemstones,Diamonds
Gold.
It is a highly sought-after precious metal which, for many centuries, has
been used as money, a store of value and in jewelry. The metal occurs
as nuggets or grains in rocks, underground "veins" and in alluvial
deposits. It is one of the coinage metals. Gold is dense, soft, shiny and
the most malleable and ductile of the known metals. Pure gold has a
bright yellow color traditionally considered attractive.