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COPYRIGHT ©2014 GEMOLOGICAL INSTITUTE OF AMERICA, INC. ALL RIGHTS RESERVED. FC0114
The World’s Foremost Authority in Gemology
™
Wonder of Nature
GIA 4Cs of
Diamond Quality
Every diamond is unique. Each reflects
the story of its arduous journey from
deep inside the earth to a cherished
object of adornment. Yet all diamonds
share certain features that allow
us to compare and evaluate them.
These features are called the 4Cs.
There is no other gemstone quite like
a diamond. It is found in the most
remote places on earth, and the
fact that it forms at all is something
of a miracle. It takes about one ton
of rock to recover less than half a
carat of rough, making diamond
one of the rarest and most desired
gemstones in the world. A diamond
is a testament of endurance and
strength – and not surprisingly,
the ultimate symbol of love.
How GIA Grades Your Diamond
GIA has been entrusted with grading some of the
world’s most famous diamonds, and brings the
same unmatched expertise to grading yours.
Independent and nonprofit, GIA is considered
the final word on a diamond’s authenticity
and quality. GIA developed the 4Cs and the
International Diamond Grading System
™
, the
standard used around the globe.
GIA screens every gemstone to identify
synthetics, simulants and known treatments.
Expert gemologists examine each diamond under
controlled lighting and viewing conditions, in
order to provide the most rigorous assessments
of a diamond’s 4Cs.
Every GIA grading
report contains these
assessments along with
additional descriptive
information and state-of-
the-art security features.
Buying a diamond is a
momentous decision. GIA
reports let you make it with confidence.
Learn more at www.gia.edu
Treasure of Time