| Allan's Jewelry & Loan, Inc.
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130 E. 10th Street |
Anderson, IN.46016 |
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Your Source For Diamonds
The Four Characteristics that determine the quality of a diamond
Two diamonds may, at first glance, look alike, but the truth is they are very
different. Although they may be of equal size, each diamond has characteristics unique to
itself, so they may have unique values. To understand these differences is to understand
the 4 C's. Cut, color, clarity and carat-weight. It is the combination of these four
characteristics that determines the value of a diamond. Let our diamond experts explain
the 4 C's to you in more detail when you visit our store.
Cut
Many people confuse cut with the shape of a diamond. The shape you select is a matter
of individual taste, and today your choice is only limited by the skill and imagination of
the craftsman. It is their effort during every stage of the fashioning process that
reflects the maximum amount of light back to the eye. Most round, brilliant-cut or
fancy-shaped diamonds possess 58 carefully angled flat surfaces, called facets, whose
placement will affect the fire, brilliance and ultimate beauty of your diamond.
How a diamond handles light.
1. When a diamond is cut to good proportions, light is reflected from one facet to
another and then dispersed through the crown, or the top of the stone.
2. If the cut of the diamond is too deep, some light escapes through the opposite side of
the pavilion, or bottom.
3. If the cut is too shallow, light escapes through the pavilion before it can be
reflected.
The different facets of a round, brilliant-cut diamond.
The seven most popular shapes of a diamond.
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| Brilliant |
Marques |
Pear |
Emerald |
Oval |
Heart |
Square |
Color
The most prized diamonds are colorless diamonds, because their beauty depends entirely
upon their remarkable optical properties. In such diamonds, all the colors of the rainbow
are reflected back to your eye. While the majority of gem diamonds appear to be colorless,
others can contain increasing shades of yellow to brown, some of which are referred to as
champagne diamonds. Other diamonds of exceptional color--red, blue, green, pink, and
amber--are known as "Fancies."
The color grading scale varies from totally colorless to light color or tinted. The
difference between one grade and its neighbor is very subtle. Experts never try to
remember color; they use master diamonds of known color for comparison.
| |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
| Colorless |
Near Colorless |
Faint Yellow |
Very Light Yellow |
Light Yellow |
Clarity
Because of their unique optical properties, diamonds, more than any other gemstone, are
capable of producing the maximum amount of brilliance. While minute crystals of diamond or
other minerals are contained in almost all diamonds, a diamond that is virtually free of
inclusions and surface markings will be judged as flawless. In these diamonds, nothing
interferes with the passage of light or spoils the beauty. But these diamonds are
extremely rare and will command a high price.
To determine a diamond's clarity grading, it must be examined under a 10x magnification
by a trained, skilled eye. What minute inclusions there may be make every diamond unique.
These are, in fact, nature's fingerprints and do not mar the diamond's beauty nor endanger
its durability. Without high magnification, you may never see these inclusions. However,
the fewer there are, the rarer your diamond will be.
| FL |
IF |
VVS1-VVS2 |
VS1-VS2 |
SI1-SI2 |
I1-I2-I3 |
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| Flawless |
Internally Flawless
minor surface blemishes |
very very
small inclusions |
very small inclusions |
small inclusions |
inclusions: visible
to the naked eye |
Carat-Weight
As with all precious stones, the weight--and therefore the size--of a diamond is
expressed in carats.
One carat is divided into 100 "points" so that a diamond of 25 points is
described as a quarter of a carat or 0.25 carats. Size is the most obvious factor in
determining the value of a diamond, but now you know that two equal sizes can have very
unequal prices depending on their quality. However, remember that diamonds of high quality
can be found in all size ranges. Here are some other examples that show the approximate
size of diamonds of varying carat weights.
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| 0.25 carat |
0.50 carat |
1.00 carat |
1.25 carats |
1.50 carats |
1.75 carats |
2.00 carats |
2.50 carats |
3.00 carats |
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