Here is some useful information about the color, clarity, cut and carat
weight of diamonds. Mrs. Gottrocks can help you purchase Certified Loose
Diamonds, such as those offered frequently in our online Ballerina
Cowgirl Jewelry Catalog and can also help you with your Moissanite
purchases.
Some consider this to be the most important factor when grading a
diamond. Graded on a scale of colorless to fancy colors, lack of color
in a diamond is not necessarily better, merely rarer. The grading scale
goes from D, which is colorless, to Z, which is in the fancy color range.
D, E and F - Colorless
G, H, I and J - Near Colorless
K, L and M - Faint Yellow or Brown
N through Q - Very Light Yellow or Brown
S through Z - Tinted Color
A study of the internal and surface marks of a diamond yields its
clarity grade. Graded on a scale from flawless to imperfect, with a
10x magnification used, the inclusions in a diamond may be other diamond
crystals, small garnets, enclosed fractures or pockets, and other crystals
which are common in the diamond. Inclusions are sometimes called "flaws,"
but nothing in nature is truly perfect and it is better to think of
them as inclusions. Unless the diamond is graded in the I2 or I3 range,
these inclusions rarely threaten the durability of a diamond and are
rarely seen by the unaided eye. The grading scale, as used by the Gemological
Institute of Amercia (GIA) is as follows:
FL - Flawless
IF - Internally Flawless
VVS1 and VVS2 - Very very slightly included
VS1 and VS2 - Very slightly included
SI1 and SI2 - Slightly Included
I1, I2, and I3 - Included
P - Heavily Included or Pique
The study of a diamond's proportioning and finish yields its cut grade.
Cutting can affect the following optical properties of the diamond:
Brilliance: The "brightness" of the stone; the reflections
of white light within the stone
Dispersion: The "fire" of the stone; the breaking up of the
white light into its component spectral colors
Scintillation: The "sparkle" of the stone; the momentary flashes
of light from the facets of a gem caused by motion
Luster: The "shine" of the stone; the quality and quantity
of reflected light from a gem
Refers to the size of the stone. One carat equals 0.200 metric gram.
If, and only if, other factors are equal, then the larger the stone
the greater the value. Because of the first 3 C's, you can never say
that just because one diamond is larger than another that it is more
valuable. Diamonds are also measured in points, with one carat being
equal to one hundred points. Usually, the higher the carat weight, the
more you pay per carat, that is, two one-quarter carat diamonds will
not cost the same as one half-carat stone of the same quality.