Tips for choosing a diamond
There are four main criteria when buying a diamond: the 4C
When selecting your diamond, it is preferable to use a lamp
that produces light that is as close as possible to the current one.
In most jewelry stores, you can find yellow spectrum lamps met
Trent
It is essential to choose your diamond with a light
"cold" that reproduces the external light coming from the north
between 12 and 14 h.
The certificate must accompany your diamond. This report
includes all the major gemological characteristics of diamond, a real identity
card of your stone.
We recommend the following laboratories: GIA, HRD, IGI and
C.C.I.P.
Laser engraving of the certificate number on the girdle
(circumference) of the stone is a "must". It allows full traceability
of your diamond. You will learn to recognize your diamond for yourself through
a microscope at a magnification of 15 times.
Examination of a diamond
Beware of stones treated. You will not find at home than
natural diamonds, the certificates will confirm.
Know that diamonds such as "clarity enhanced" or
"Enhanced Color" has been artificially modified (or color purity) as
the price of a diamond drops very sharply (-70 to -80%)
An individual buying a diamond without a certificate takes
the risk of unwittingly buying a treated stone!
It's not just the four main criteria of the diamond (weight,
clarity, color, size) to consider when buying a diamond.
Indeed, the proportions of the diamond, its finishes and the
fluorescence are also very important criteria.
1) The fluorescence:
Choose diamond fluorescence "none" or
"nil" (null), "slight" (low) or "medium" for the
colors D, E or F.
Avoid diamond fluorescence "strong" (high), it
would give a milky appearance to the stone.
Choose a fluorescence "strong" for diamonds with
color H, I, J. .. , This will improve the brightness and color of the stone.
2) The proportions:
Choose a diamond with proportions "very good"
(very good). This will guarantee an optimal brightness.
The proportions of "good" give a dull appearance
to the stone, it is often flat diamonds.
3) Finishes
Choose a diamond finishes with "very good" (very
good) or "good" (good).
Avoid finishing called "medium" (medium) or
"poor" (bad).
Finishes "very good" are rare.
We advise you to choose the diamond with a purity of between
IF (pure) and SI2 and color between D and I.
For a stone for use in white gold, you should choose a color
D, E, F or G. For yellow gold, the colors are suitable H or I, as the yellow
gold make the stones whiter than they really are
Precious stones and diamonds
Purities on a microscope is needed to see an inclusion of
type or VVS VS1. The VS2 and SI1 are correct, especially if the inclusion can
be hidden under a prong of the ring.
From the point of view "investment", a diamond or
pure VVS will financially more valuable than another with a pure VS or SI.
It is important to buy the diamond market prices.
There is a price list of cut diamonds available by
subscription for professional and which is called the "Rapport Diamond
Report." This list gives the price of all diamonds from 0.01 carat to 5.99
carats depending on their weight, their color, their purity and their forms of
size.
It is used every day to diamond traders and the world in
their transactions. This is of course the diamond.
Our advice:
Most importantly, choose a diamond that has
"life", for which you have a "feeling".
1. GIA, Gemological Institute of America.
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