Shape

Polish

Symmetry

Hearts & Arrow

Fluorescence

Luster

Girdle

Culet

Extra Facets


Basic Shapes **
Types of Diamond Description
Image
Round – (RD) This is by far the most popular of the shapes available today. Using precise mathematics and theories on the interplay of light, the process of producing a Round Diamond has been fine tuned for over a century to bring forth this shape's magnificent fire and brilliance.
Princess – (PR) Just like the aura that surrounds its name, a Princess Diamond is a thing of beauty. Cut in a traditional square with pointed corners, a Princess Diamond exudes elegant brilliance and is often used to adorn an engagement ring.
Emerald – (EM) The Emerald Diamond draws inspiration from the traditional pavilion cut of emerald gemstones. In the Emerald Diamond, the pavilion is cut with rectangular facets to produce a unique optical appearance, offering a larger, open table that highlights the clarity of the diamond.
Asscher (Square Emerald) – (SQEM) Similar to the emerald-cut is the Asscher. Only it is square in shape. While keeping to the overall emerald-cut, the pavilion is faceted to produce a unique refractive appearance.
Marquise – (MQ) The Marquise brings to mind the sophistication and elegance of the French. Born of nobility, this shape is perfect for long slender fingers and gives the illusion of largeness in comparison to other diamonds. A Marquise Diamond often looks stunning when it is set with Round or Pear-shaped side stones.
Oval – (OV) Oval Diamonds are highly regarded for their inner brilliance and eye-catching shape. Especially when languidly flashed from slender fingers.
Square Radiant – (SQRT) While all Radiant Diamonds do not have precisely the same shape, the Square Radiant Diamond is distinctly square in its silhouette. One of the most preferred types in jewelry, it’s even shape and signature trimmed corners work well when set with side-highlight diamonds such as Baguettes or Round Diamonds.
Radiant - (RT) At first glance you may be surprised. Here is a diamond shape that somehow had its corners trimmed off! But this is precisely the signature of a Radiant. A popular and versatile choice for jewelry, the radiant-cut looks equally beautiful set with either baguette or round side-diamonds. Radiant-cut diamonds can vary in their degree of being rectangular.
Pear – (PS) As sparkling as a falling tear. As softly rounded as a Pear fruit. This is the sweet and elegant Pear Diamond shape. This shape is often chosen for its romantic appeal as well as its flaring design. An elongated Pear Diamond shape creates a subtle slimming effect on fingers.
Heart – (HRT) The symbol of love. This is a choice for the romantic. A Heart Shape speaks of love like no other. A distinct and purpose-derived shape, the Heart Shape is often the lover's preferred diamond gifting choice.
Cushion Brilliant(CUBR)

Cushion (CU)

Cushion Modified Brilliant (CUMBR)
Also known as a 'Pillow-cut', Cushion Shape diamonds have rounded corners and larger facets that increase their brilliance. Cushion Shape diamonds are available in a variety of shapes including square and rectangular.
Triangle (TA)
Trilliant (TR)
A shape that fits all occasion and reason. This shape is often chosen for its romantic appeal as well as its flaring design. A popular and versatile choice for jewelry. TA contains 22 facets while TR contains 43 facets.
Fancy Shape (FS) This is something special, fancy shapes are shape that are carved and made keeping an inspiration in mind. This displays the creativity of the craftsman.  

POLISH - PO

Polish can be result of the finishing process or be affected by blemishes created after cutting. The term "Polish" refers to the degree of "polishing lines" that appear on the surface of a finished diamond which can be seen with the use of 10x magnification. These polishing lines are caused by the minute diamond crystals which are embedded in the polishing wheels used by the diamond cutters to polish the surface of the diamond after cutting. While not quite the same in appearance, they are similar in concept to the swirl marks left on the surface of a car from the use of an orbital buffer, but are much less noticeable. It is important to note, however, that polish lines are straight in appearance.

Code Description
(ID) IDEAL This is our predilection. No polish lines or marks are visible when the diamond is viewed under 10x magnification. High magnification, such as 30x may be used to locate any possible imperfections. The brilliance of a diamond with Ideal Polish will be noticeably superior to that of a diamond with a polish rating of Excellent.
(EX) EXCELLENT This is our preference. No polish lines or marks are visible when the diamond is viewed under 10x magnification. High magnification, such as 30x may be used to locate any possible imperfections. The brilliance of a diamond with Excellent Polish will be noticeably superior to that of a diamond with a polish rating of Very Good.
(VG) VERY GOOD Represents diamonds that contain one or two minor groupings of transparent polish lines that are visible under 10x magnification. Higher magnification will again be used to locate these areas easily. The degree of brilliance between a diamond graded as Very Good in Polish and Good is still noticeably different
(GD) GOOD Numerous areas consisting of minor transparent lines are visible under 10x magnification. Occasional white polish lines may also be visible, but limited in number. As a bare minimum, we recommend that a diamond have a Polish Grade of Good or better. However, it is important to note that it is difficult to have Excellent or Very good polish in most of fancy shape diamonds so generally it carries Good polish.

SYMMETRY - SY

Symmetry refers to the precision with which the facets of a diamond are aligned with each other and the consistency of facet shape and size per given section. The symmetry rating reflected on a diamond grading report is not an indication of the proportions of a diamond.

Code Description Image
(ID) IDEAL No misshapen or miss-aligned facets are visible when the diamond is viewed under 10x magnification. High magnification, such as 30x may be used to locate any mis-aligned or misshapen facets. The brilliance of a diamond with Ideal Symmetry will be noticeably superior to that of a diamond with a symmetry rating of Excellent.
(EX) EXCELLENT No misshapen or mis-aligned facets are visible when the diamond is viewed under 10x magnification. High magnification, such as 30x may be used to locate any mis-aligned or misshapen facets. The brilliance of a diamond with Excellent Symmetry will be noticeably superior to that of a diamond with a symmetry rating of Very Good.
(VG) VERY GOOD Represents diamonds that contain one or two minor symmetry characteristics that can be found under 10x magnifications. Higher magnification will again be used by the grader to locate these areas easily. The degree of brilliance between a diamond graded as Very Good in Symmetry and one graded as having Good Symmetry is still noticeably different, however, it is practically impossible for the average consumer to distinguish between Very Good and Excellent or Ideal Symmetry without a lot of coaching.
(GD) GOOD Numerous inconsistencies of facet alignment and shape are visible under 10 x magnifications. As a bare minimum, we recommend that a round brilliant cut diamond have a symmetry rating of Very Good or better. However, it is important to note that it is difficult to have Excellent or Very good symmetry in most of fancy shape diamonds so generally it carries Good symmetry.

HEARTS & ARROWS (HA)

Faceted diamond forms a well aligned, symmetrical & balanced form that reveals the well known eight rayed arrow pattern which you can see through special device like the Fire scope by keeping diamond face up. Here symmetry pattern can be seen in perfect order. Perfect Heart shape will be observed from the pavilion side. Maximum Life, Fire, & Sparkle are observed in diamonds that has been cut, faceted in certain specific proportions. These parameters are followed by our skilled artisans.

Code Description Image
EX – EXCELLENT This diamond has all its hearts and arrows in perfect shape and with accurate dimensions. It displays Very high brilliance.
EI – INSCRIPTION OF H & A
Inscription of H&A in diamond, carrying Excellent H&A.
VG – VERY GOOD This diamond has most of its hearts and arrows in perfect shape and with accurate dimensions. It displays Very high brilliance but less than EXCELLENT Heart & Arrows
VI– INSCRIPTION OF H & A Inscription of H&A in diamond, carrying Very good H&A.
GD - GOOD These diamonds will have a good number of its hearts and arrows in perfect shape and with accurate dimensions.It display Very high brilliance but less than VERY GOOD HEARTS & ARROWS.
GI– INSCRIPTION OF H & A Inscription of H&A in diamond, carrying Good H&A.

 


FLUORESCENCE – FL

When we speak of Diamond Fluorescence, we are referring to the diamonds tendency to emit a soft colored glow when subjected to ultraviolet light (such as a "black light"). Fluorescence is a form of illumination that is created when a diamond is exposed to low or high wave ultraviolet radiation. Faint or medium fluorescence will rarely affect a diamond's appearance. Usually fluorescence is unnoticed by the human eye in ordinary light. Fluorescence can cause a diamond to appear less clear or slightly hazy if the diamond exhibits very strong or extreme fluorescence. When selecting your diamond it is best to choose a diamond that has no fluorescence or faint to moderate fluorescence.

Code Description Image
N – NONE This diamond do not have any fluorescence
F – FAINT / VERY SLIGHT This diamond have weak fluorescence, not a significant influence on color
M – MEDIUM / SLIGHT This diamond have average fluorescence, small influence
S– STRONG This diamond have strong influence, substantial color influence
VS – VERY STRONG This diamond have very strong influence, substantial color influence

Fluorescence Color - FC

When we speak of Diamond Fluorescence, we are referring to the diamonds tendency to emit a soft colored glow when subjected to ultraviolet light. Different diamonds emit different colors, examples of which are listed below

   
BL- BLUE
   
YL -YELLOW
   
WT-WHITE
   
OR-ORANGE
   
GR-GREEN
   

LUSTER - LU

This is another parameter, which has been found of importance in determining the exact purity of the diamond. The amount of light that the stone reflects and the type of light that is emitted by the stone determine luster of a diamond. Luster refers to the quality of a surface in reflected light. The luster of a diamond is usually described as adamantine luster.

Code Description
L1 – VERY GOOD This diamond has very high quality reflection and emission of light.
L2 - GOOD This diamond has high quality reflection and emission of light
M1 - LIGHT MILKY This diamond has low quality reflection and emission of light
M2 – MEDIUM MILKY This diamond has very low quality reflection and emission of light.
M3 – HEAVY MILKY This diamond has very very low quality reflection and emission of light

 


GIRDLE

The outer edge of a diamond which forms a band around the stone. The girdle can be faceted or non-faceted

Code Description Image
(F) FACETED A faceted girdle consists of a small series of polished facets. Diamond cut in a way to include many facets. The multiple facets structure increases light reflection and gives the stone a bright and shining look.
(NF ) NON-FACETED Diamonds that do not have geometrically shaped flat polished facets are graded as non faceted

CULET

A diamond's culet is the point on the bottom of a diamond's pavilion. A diamond's culet may be pointed or it may be blunted with a small facet. The culet facet can vary in size. This culet's size determines the grade that the culet is assigned.

Code Description Image
PO - POINTED If there culet faceted is NONE then it is referred pointed culet. The kite facets of the crown should exactly intersect with the pointed edge of the pavilion main facet and the upper girdle facet should synchronize with girdle facets. There should be a perfect alignment and no sideways displacement with respect to each other
MD - MEDIUM If culet faceted is medium then it is referred as medium culet
FC - FACETED If culet faceted is very high then it is referred as faceted culet. This culet should lie in the centre of the octagonal table. It is very easy to see whether the culet is eccentric from a side view of the stone as well as on looking through the table.
BR - BROKEN If culet facet is broken then it is referred as broken culet

EXTRA FACETS - EF

Occasionally a cutter will find the need to remove an inclusion near the surface or to compensate for facets which do not meet correctly and he will add an "extra facet". Extra facets have no effect on clarity grades. This is subdivided in Two parts: - 1) EFCR: - Extra Facets on Crown, 2) EFPV: - Extra Facets on Pavilion.

Extra Facets on Crown (EFCR)

Code Description Image
NV - NOT VISIBLE Very difficult to find the extra facet on crown. It is not visible on crown.
MN – MINOR Difficult to find extra facet on crown. It is slightly visible on crown with 10x magnification
MD – MEDIUM Easy to find extra facet on crown. It is visible on crown with 10x magnification.
MJ – MAJOR Very easy to find extra facet on crown. It is easily visible on crown with 10x magnificationt

Extra Facets on Pavilion (EFPV)


Code Description Image
NV - NOT VISIBLE Very difficult to find the extra facet on Pavilion. It is not visible on Pavilion.
MN – MINOR Difficult to find extra facet on Pavilion. It is slightly visible on pavilion with 10x magnification.
MD – MEDIUM Easy to find extra facet on Pavilion. It is visible on pavilion with 10x magnification.
MJ – MAJOR Very easy to find extra facet on Pavilion. It is easily visible on pavilion with 10x magnification