Transcript EVOLUTION OF DIAMONDS

By
Evan Daniel Tammi
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Diamonds were formed
millions of years ago
below the earth's surface
between 75 to 120 miles
deep by pressure and
extreme heat forcing
carbon atoms to crystallize
into diamonds. When
pressure built up in
volcanoes forcing volcanic
eruptions it was then that
the diamonds were carried
to the surface. Sometimes
diamonds would settle
back into their volcanic
pipes while others were
washed 100 of miles away
in floods and rivers
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Diamonds are one of the hardest minerals known to man. It is
made up of 99.5% pure carbon and the remaining .05% elements
determines the diamonds colour and shape.
It is believed that the first diamond mines were discovered in a
little country called India 500 BC. For two thousand years India
was the largest producing diamond countries producing some of
the worlds most famous diamonds.
COUNTRIES
Angola 11%
Australia 7%
In 2006 an estimated 163 mil ion carats estimated at 12.5
bil ion dollars were mined.
Botswana 7%
Canada 11%
Congo 7%
Nambia 6%
Russia 18%
South Africa 27%
Other 5%
Rough diamonds are
diamonds found
before the get cut and
polished for sale. The
big rough diamonds
sometimes are cut
into two diamonds
such as the Cullinan
one and the Cullnian
two . They were cut
out of a diamond that
weighed 3106 carats.
The Cullinian 1 is the 2nd
biggest diamond in the
world with an estimated
value at 400 million and
weighing 530.20 carats
making it one of the most
valuable diamonds in the
world.
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Once a diamond is mined it is taken to a artisan who determines the most important
components of the diamond. When you are in the market to purchase a diamond, you
need to consider the 4 C’s.
CARAT This refers to the diamond’s size by weight. Each Carat represents 100
points.
CUT This part of the diamond is influenced by man. The cut of the diamond does not
refer to the shape of the cut diamond but rather the craftsmanship applied in cutting
the facets of the stone. A well cut diamond is one that reflects the most light.
CLARITY When diamonds are born shall we say, along their journey they may have
embedded in them natural elements called inclusions. An artisan will examine the
stone very closely. They will then decide which is the best way to cut the diamond to
achieve optimum brilliance by eliminating the inclusion or by reducing it.
COLOUR This is one part of the diamond that is not determined by man. The closer
the diamond is to colorless the more pure and valuable the diamond is. The color
grades are D, E and F. F is considered a colorless diamond that is rare.
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A diamond is a semi precious stone
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The bigger the diamond does not necessarily mean better
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The biggest diamond in the world is the Golden Jubilee which
weighs 545.67 carats
That a diamond can only be scratched by another diamond.
That there is such a thing as industrial diamonds used for
cutting, drilling, grinding and polishing
DeBeers is the largest diamond mining company
This slide show was made
by
Evan D. Tammi
With the help of
crazy topics.com
A special Thank You to
and my Mom and Dad
For helping me organize
My thoughts and material