is an independent Gemological
Laboratory, which specializes in the|
grading and analyzing of diamonds that
have undergone Enhancing Treatments.
We issue Gemological Reports based on
our highest professional opinion,
assessment, knowledge and wide
experience in the specific field of
Our goal is to provide the consumer with
a basic understanding of the
type of process that a diamond has
All diamonds certified by
Laboratories bear a Laser Inscription on
the girdle, which is easy to locate with
a magnifying glass. Thus, by comparing
with the Report Number, one
can undoubtedly identify the diamond
Laser Drilling is a process that is often used to remove
dark inclusions and improve the diamond’s clarity.
A tiny laser beam is used to drill into the diamond.
Some inclusions are dissolved by corrosive acids that
bleach the dark inclusions, but do not harm the
A newer type of laser enhancement, called KM,
creates subtle cracks around inclusions near a
diamond’s surface. The imperfection is removed by
deep boiling and the remaining marks appear more
like natural flaws than laser trails.
HPHT is a process that converts low colored diamonds
(usually M - O) into colorless/near colorless
range (D - H). The treatment involves High Pressure
and High Temperature. The HPHT technique has also
been applied to yielding fancy yellowish green and
greenish yellow colors, pink and blue colors.
Irradiation of diamonds using a nuclear reactor or
linear accelerator, sometimes combined with heating,
is used to produce a variety of different fancy colored
Fracture filling is a process for filling natural fractures
in diamonds. Its purpose is to improve the clarity of
the diamond by optically hiding the fracture. The
fracture is filled with a non-permanent filler with
optical qualities similar to those of a diamond.
A Gemologist/Diamond Grader is able to identify the
fracture filled diamond by looking for a flash of color,
or “flash effect”. It is important to notify your jeweler
that your diamond has been fracture filled before they
begin any repair work on your piece.
A diamond means that your
diamond has been subjected to highly scientific
evaluation, by a distinguished team of gemologists,
using State-of-the-Art instrumentation and computer
technology to assure you the most accurate assessment
of the diamond that you are buying. Our laboratory
environment and grading process is virtually
impossible to duplicate anywhere else.
When you are ready to buy a diamond, remember to
ask your jeweler about the 5’Cs:
Colorless diamonds are extremely rare and highly
valued. Most diamonds are nearly colorless with
yellow or brown tints. The international grading
system uses letters to represent colors, beginning with
D (colorless) and ending at Z (light yellow or brown).
Most diamonds contain unique birthmarks called
inclusions (internal) and blemishes (external). The
international grading system grades the clarity range
from Flawless diamonds, which contain no birthmarks
to a diamond having major inclusions graded I-3.
Describes the proportions, symmetry and finish of a
diamond. It can also mean the shape of the stone as
in Round Brilliant, Emerald Cut, Princess Cut etc.
Diamonds are weighed using metric carats. A carat
is divided into 100 points. 1 carat equals 0.20 gram.
Certificates identify and evaluate specific
characteristics that determine the value of the diamond