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Thursday, January 24, 2008

DIAMOND AND ITS ROLE, TYPES, COLORS AND SHAPES

DIAMOND AND OUR SENTEMENTS

Diamond is only a single gemstone which is closely touch our sentements.
Especially women are so crazy about the diamond jewelry, the reason is that the love with jewelry is include in the nature of every woman.Another reason may be that the diamond is a precious metal and it is so costly, so that a woman feels keen interest to wear such a diamond jewelry.

DIAMONDS ROLE
A high quality diamond is a marvelous sight. No synthetic can quite match it. But with all the possible treatments out there it can be hard to know whether or not you really have a high quality diamond naturally, or one that has been treated to look better than it really is.

DIAMOND PRICES
As treated diamonds are cheaper, they can be nice for the more
budget-minded shopper. It's a basic fact of gemstones that higher
quality stones are rarer and more expensive. A lower quality stone
that has been made to appear like a better one is not deserving of the
higher price.

HYBRID DIAMOND
The hybrid diamond uses a technique that sees tiny diamond
crystals bonded by using diffusion or brazing to a wedge shaped
steel support results in what’s referred to as a hybrid diamond.
The process creates the first almost flawless simulated diamond,
and the market is certainly ready for such an option.
The hybrid diamond has become very popular with the consumer looking to
purchase a diamond much to the controversy with the diamond market.
The hybrid diamond will take the moissanite every time in all aspects.
The hybrid diamond is graded at 5-G, which is a rating that even the
majority of diamonds don’t reach. You’ll not only have the color of a
hybrid diamond you will have the durability too. This latest technique
of brazing or diffusing the hybrid diamond bonding methods does an
excellent job of attaching the steel wedge shape to the diamond disk.
The biggest concern with the hybrid diamond is this attachment, which
is difficult at best. The hybrid diamond costs a fraction of a diamond. It’s
beautiful, brilliant, and affordable, and it comes without the guilt of blood shed.

How to judge diamond colors
Diamonds are not all truly colorless, but it's the colorless,
often called white, which are diamonds that other shades
are judged against.
The Gemological Institute of America (GIA) has devised
a set of guidelines to grade diamond color. The color of
graded diamonds is compared to the color of control stones,
preselected gems of a specific color.
Diamond Grading Procedure
· Graded diamonds must be loose stones, because the color
diamonds in settings can be affected by the metal colors
used in the mountings. Diamonds are placed table-down,
pavilion-up and viewed with a 10X loupe. A lettering
system from D to Z is used to identify the amount of color
present in each diamond, with D awarded only to rare,
totally colorless diamonds

Diamond Color Grades
Colorless diamonds and diamonds that are yellow or
yellowish brown are grouped into the categories shown below.

D-E-F
Colorless.
G-H-I-J
Nearly colorless.

K-L-M
Faintly tinted, usually yellow.
N-O-P-Q-R
Lightly tinted, usually yellow. Tint can be seen with the naked eye.

S-T-U-V-W-X-Y-Z
Tinted, usually yellow, may progress to brownish. Tint visible to
the naked eye, even when mounted.

Other Factors Affect Diamond Color
FluorescenceGIA diamond reports and many other lab reports
indicate whether or not a diamond exhibits fluorescence, which
means the diamond's color changes when it is exposed to
ultraviolet radiation. Since UV radiation is a component of
daylight and is also present in fluorescent lit rooms, diamonds
with this characteristic can appear to change color quite often.
· Diamonds that produce a blue reaction usually appear whiter,
or more colorless, under UV light.
· Stones that fluoresce yellow appear even more yellow under
some lighting conditions.

Diamond Color Treatments
The color of a some diamonds can be dramatically changed by using
HPHT (high pressure/high temperature) processing. Unlike
diamond treatments used in the past, HPHT changes appear to be
permanent. Coatings are sometimes used to temporarily enhance a
diamond's color.


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