DIAMOND GRADING
Doctors "practice" medicine and lawyers "practice" law.
After some basic training, we spend the rest of our lives learning and
perfecting our trades. If ten of the worlds leading authorities on
diamonds got together to look at stones, there would almost certainly be
some stones that all of them could not agree on the grading. Grading
diamonds creates a problem that is all too common. The stone is
graded incorrectly (almost never in the customers favor). This
can be done by a con man to increase his profit margin or by an honest
man who doesn't grade enough diamonds to be professional about it.
The result is the same, you will pay more than you should for the stone
and the honest merchant must constantly try to compete against these dealers.
A certificate created by the best grader in the world is not a guarantee
that everyone will agree on his numbers, but it's usually far better than
the best guess you can get on the street. Our non certified diamonds
are graded by a large diamond supply house and we trust their grading.
For stones over 1/4 carat, we strongly recommend buying a certificated
stone. The grading on these stones is done by a professional laboratory.
There is a fee for the testing on each stone. The cost will be
slightly higher, but the peace of mind should be worth it.
CLARITY
- IF = Internally flawless -- No flaws visible at
10 power magnification.
- VVS = Very few and very small inclusions.
Difficult to see at 10 power magnification. These are normally graded
into VVS levels 1 and 2.
- VS = Very small inclusions -- Difficult to find
at 10 power magnification. These are normally graded into VS levels
1 and 2.
- SI = Slightly included -- Small inclusions which
are easily recognized at 10 power magnification. These are normally
graded into SI levels 1, 2 and 3.
- I = Included -- I level 1 have inclusions that
can be seen without magnification, but do not diminish the brilliance.
- I level 2 has larger and/or numerous inclusions,
slightly diminishing the brilliance and recognizable with the naked eye.
- I level 3 has large and/or numerous inclusions
which diminish the brilliance considerably.
Note: Grade SI-1 (and some say SI-2)
is considered to be eye clean. Above this the price goes up rapidly
and may not be necessary for everyday jewelry.
COLOR
- D = Blue/white -- the finest color
- E = A slightly lower grade of Blue/white
- F = Fine white
- G = A slightly lower grade of Fine white
- H = White
- I = Weakly tinted white
- J = A slightly lower grade of Weakly tinted white
- K & L = Tinted white
- M & N = Weakly yellow
- O & P = Yellowish
- Q & R = Weakly yellow (darker yellow than
grades M & N)
- S to Z = Yellow
NOTE: Good quality commercial jewelry uses
G to I color diamonds and many use much lower grades. The color
may not be quite as white but there are some beautiful J to M color stones.
A stone with a higher color grade will show a little more brilliance.
You can pay more for higher color grades and if money isn't a problem,
then by all means go ahead. For the average buyer who wants the biggest
stone for the available money, you don't need to buy higher color grades
to have a good looking piece of jewelry.
Let us give you a price
quote for your next diamond purchase.