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Grading System
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Introduction of Grading System
Virtually all diamond cuts sold for use in jewelry are one of ten round or fancy diamond shapes. The most popular diamond shapes are:
Round
Princess
Marquise
Oval
Pear
Emerald
Heart

L Radiant

SQ Radiant
Cushion
Asscher
Diamonds that ranges from colorless to light yellow fall within the normal color range. The diamond color scale starts with the letter D and ends with Z. D-colored diamonds have the least amount of colors while Z colored diamonds have the most color. As diamonds are closer to D on the measuring scale, the more expensive they will be. Beyond the Z color, diamonds are graded as Fancy Color, which uses a separate set of parameters.
For a diamond to be more precious, they must reflect all the shades of color. Any color tint in the diamond will obstruct this. Thus, the less color there is, the more will it reflect other shades of color. Colorless diamonds are very rare. They contain little to no impurities and are essentially chemically pure. As the diamond shows more tint of color, it goes down the color grading scale.
Virtually all diamonds contain identifying characteristics, most of them too small to be seen with the unaided eye. These "inclusions" are nature’s birthmarks; when viewed using magnification they like tiny crystals, clouds or feathers.
To determine a diamond’s clarity grade, a gemologist will consider the size, number, position, color and general of any incusions. Diamonds exhibitind no such inclusions are categorized as flawless (FL) or internally flawless (IF).
In general, the greater the number and size of inclusions within a diamond, the lower its clarity grade. Our diamonds are selected from the top clarity grades;any inclusions only become visible under 10x power magnification
FL Flawless
IF Internally Flawless
VVS1 Very Very Small Inclusions 1
VVS2 Very Very Small Inclusions 2
VS1 Very Small Inclusions 1
VS2 Very Small Inclusions 2
SI1 Small Inclusions 1
SI2 Small Inclusions 2
SI3 Small Inclusions 3
I1 Inclusions 1
I2 Inclusions 2
I3 Inclusions 3
Cut
Diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut does not refer to shape (pear, oval), but the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond's brilliance; this means if it is cut poorly, it will be less luminous.
EX VG G F P IDL
Excellent Very Good Good Fair Poor Ideal
Polish refers to the degree of smoothness of each facet of a diamond as measured by a gemologist. When a diamond is cut and polished, microscopic surface defects may be created by the polishing wheel as it drags tiny dislodged crystals across the diamond's surface. Depending on the severity, these defects may disrupt light patterns as the light rays enter and exit the diamond.
EX VG G F P IDL
Excellent Very Good Good Fair Poor Ideal
Symmetry refers to how precisely the various facets of a diamond align and intersect. This can include extra or misshapen facets, off center culets and tables, and wavy girdles.
A diamond with poor symmetry may misdirect light that travels into the diamond, sending it off at slightly wrong angles, and thereby reducing the diamond's brilliance. Often, a diamond cutter will purposefully allow a minor reduction in symmetry as a way of preventing a defect present in the rough stone from being retained as part of the finished diamond.
EX VG G F P IDL
Excellent Very Good Good Fair Poor Ideal
Fluorescence is a greatly misunderstood concept. Fluorescence is the reaction of trace minerals within the diamond that cause the diamond to glow when exposed to ultraviolet light. In the laboratory, special ultraviolet lamps are used to check for this but the sun is also a source of ultraviolet rays so diamonds will react in daylight as well. About one third of all diamonds fluoresce. Of these, the most common color is blue, but diamonds can fluoresce other colors. More than 95% of those that do fluoresce will fluoresce blue. The next most common color is yellow. Any other color of fluorescence would be rare.
N F M ST VST VSL
None Faint Medium Strong Very Strong Very Slight
The hearts and arrows pattern (often marketed under brand names such as 'Hearts on Fire') refers to a symmetrical light pattern visible using a specialized viewer in diamonds cut within certain narrow specifications.
N F M ST VST VSL
None Faint Medium Strong Very Strong Very Slight
Luster is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the latin lux, meaning "light", and generally implies radiance, gloss, or brilliance.
EX VG ML1 ML2 ML3
Excellent Very Good Slight Milky Midium Milky Heavy Milky
There is tow part of inclusion (1) Table Black (2) Side Black. We grade diamonds on the basis of black inclusions as compared to the total inclusions by determining the following categories.
N B_PP B1 B2
None Black Pin Point Minor Midium
There is two part of inclusion (1) Table Inclusion (2) Side Inclusion. We grade diamonds on the basis of black inclusions as compared to the total inclusions by determining the following
N B_PP B1 B2
None Black Pin Point Minor Midium
It is an extra facet placed on a diamond’s normal facet without considering the symmetry of the stone. These are additional to the facets required for making a brilliant-cut diamond.
N None
P_SM Pavalion Small
P_MD Pavalion Midium
P_MJ Pavalion Major
P_HY Pavalion Heavy
C_SM Crown Small
C_MD Crown Midium
T_SM Table Extra Facet