YOUR
GUIDE TO DIAMOND QUALITY AND VALUE A diamond is judged by four distinct
factors that combine to arrive at its value. These are called the 4C's. |
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4
C's | |
Of
all the 4C's, cut is the one most directly influenced by humans. The other three
are dictated by nature. The cut or make of a diamond will dramatically influence
its fire and sparkle, for it is the polisher's skill that releases its beauty.
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CUT | |
It
is the cut that enables a diamond to make the best use of light. |
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COLOR | |
Although
the majority of gem diamonds appear to be colorless, others can contain increasing
tinges of yellow or brown, some of which are referred to as champagne diamonds.
Rare stones of exceptional color - green, red, blue, pink or amber are known as
fancies. |
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CLARITY | |
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Clarity
therefore, is the term that is used to indicate the extent to which the diamond
you purchased is free of tines' which is a natural phenomena There are
four major grading systems for classifying diamonds - GIA, CIBJO, IDC and Scan
D.N., and an international standard (ISO) is soon to come into existence. At present
a stone is termed flawless by GIA if it is without surface characteristics or
internal inclusions: foreign systems use the term Loupe Clean which equates to
both flaw less and internally flawless. Grades then gradually descend. |
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CARAT
WEIGHT | |
As
with all precious stones, the weight of a diamond is expressed in carats. The
word carat originated in nature. The unit of weight: was determined by the
the seeds of the carob tree. Diamonds were traditionally weighed against these
seeds until the system was standardized and one carat was fixed at 0.2 grams (one
fifth of a gram). One carat is divided into 100 "points" so
that a diamond of 25 points is described as quarter of a carat or 0.25 carats. |