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Shape:
Round
Princess
Cushion
Oval
Emerald
Asscher
Radiant
Pear
Heart
Marquise
Other
Color:
D
E
F
G
H
I
J
K
+ More
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
- Less
Carat Weight:
to
Clarity:
FL
IF
VVS1
VVS2
VS1
VS2
SI1
SI2
SI3
I1
Total Price:
$
to $
Cut:
Ideal
Excellent
Very Good
Good
Fair
Poor
ADVANCED CRITERIA
ADVANCED CRITERIA
Lot Number:
Girdle:
Extremely Thin
Very Thin
Thin
Slightly Thin
Medium
Slightly Thick
Thick
Very Thick
Extremely Thick
to
Extremely Thin
Very Thin
Thin
Slightly Thin
Medium
Slightly Thick
Thick
Very Thick
Extremely Thick
Cert Type:
GIA
EGL USA
EGL INTL
AGS
HRD
IGI
Other
Culet:
None
Very Small
Small
Medium
Slightly Large
Large
Very Large
to
None
Very Small
Small
Medium
Slightly Large
Large
Very Large
Polish:
Ideal
Excellent
Very Good
Good
Fair
Poor
Symmetry:
Ideal
Excellent
Very Good
Good
Fair
Poor
Fluorescence:
None
Very Slight
Faint
Medium
Strong
Very Strong
Depth %:
to
Table %:
to
Dimensions:
L:
to
W:
to
D:
to
Ratio:
to
Copyright Information
©
2010
Vardi Company
Shape
Diamonds are available in many different shapes. The shape of a diamond describes its appearance when viewed from above. Diamond shapes fall into two categories: Round and Fancy Shape, which encompasses all non-Round diamonds.
There are a variety of differences between the various shapes, including specific characteristics each shape exhibits as well as differences in how they are cut and evaluated.
The main factor to consider when selecting the shape of your diamond is your personal preference and what you find most attractive.
Color
The color grading of a diamond refers to the whiteness of the diamond, therefore, a higher color grade indicates less color is visible. White diamonds are graded on a scale from D to Z, with the color grade of D being the highest grade achievable, indicating that the diamond is colorless. On the other hand, a color grade of Z indicates the diamond exhibits a noticeable yellow color. In addition to white diamonds, there are also Fancy Colored diamonds which exist in all colors of the rainbow.
Carat Weight
The carat weight of a diamond refers to how much the diamond weighs. The term carat refers to a unit of measure most commonly associated with weighing diamonds and other gemstones.
Clarity
A diamond's clarity grade refers to the quality of the diamond, as measured by the number and size of inclusions in the diamond. There are many different types of inclusions which may occur in a diamond and they effect the clarity grade, value, and physical beauty of the diamond differently. Generally, the most important factor when evaluating a diamond's clarity is whether the stone is eye-clean, meaning that the diamond's inclusions are not visible to the naked eye.
Clarity grades range from Flawless (FL) to Included (I) with flawless stones being completely free of any inclusions to included where the inclusions are generally visible to the naked eye.
Total Price
Total price refers to the total cost for the diamond. The price of a particular diamond is based on a variety of factors with the main factors being referred to as the 4Cs - Cut, Color, Clarity, and Carat Weight.
Total Price
Total price refers to the total cost for the diamond. The price of a particular diamond is based on a variety of factors with the main factors being referred to as the 4Cs - Cut, Color, Clarity, and Carat Weight.
Cut
The cut grade of a diamond is an objective measure of how effectively the diamond returns light back to the viewer's eyes. It is one of the primary factors which effect the appearance of the diamond. A well-cut diamond will return more of the light back through the top of the diamond, while a poorer cut will cause light to leak out the bottom and sides of the diamond.
Fancy Shape Cut Grades - While round diamonds receive a cut grade directly from the grading laboratories, fancy shape cut grades are determined by using the lower of the polish and symmetry grades. For example, if a Princess cut diamond has a Polish grade of Excellent and a Symmetry grade of Very Good, the stone will be classified as having a cut grade of Very Good.
Lot Number
The Lot Number is the unique reference number assigned to each diamond. When communicating with a company representative, they may ask for the Lot Number in order to identify which specific diamond you are referring to.
Girdle
The girdle of a diamond refers to the area where the crown and pavilion intersect to define the perimeter of the diamond. When evaluated, a diamond's girdle in characterized by its thickness.
Please note: If you do not see a girdle thickness in the search results, simply click on the certificate to view the information.
Cert Type
All of our diamonds are inspected and certified by independent gemological laboratories who analyze and grade the diamonds on a variety of factors. There are many independent gemological laboratories operating today and we offer diamonds graded by the most reputable laboratories. The most well-known grading laboratories include the Gemological Institute of America (GIA), European Gemological Laboratory (EGL), American Gem Society (AGS), HRDAntwerp Institute of Gemology (HRD), and International Gemological Institute (IGI).
Culet
The culet refers to the facet or point at the bottom of the diamond.
Please note: If you do not see a girdle thickness in the search results, simply click on the certificate to view the information.
Polish
The polish grade of a diamond is determined by how well the diamond cutter polished and finished the stone. The main factors considered when assigning a polish grade to a diamond include the smoothness of the polish of the facets, the visibility of marks on the diamond from the polishing wheel, and how well defined the borders of each facet are.
Polish grades for diamonds range from Ideal to Poor; however, many grading labs limit the top grade to Excellent, rather than Ideal.
Symmetry
The symmetry grade of a diamond refers to how exact the shape and arrangement of its facets are.
Symmetry grades for diamonds range from Ideal to Poor; however, many grading labs limit the top grade to Excellent, rather than Ideal.
Fluorescence
Fluorescence refers to the natural phenomenon whereby some diamonds emit a visible light when exposed to ultraviolet light. Not all diamonds exhibit fluorescence and for those that do, the effect is generally negligible under normal lighting conditions. Approximately 25-35% of all diamonds exhibit fluorescent properties.
Fluorescence is evaluated on a scale from None to Very Strong. Besides diamonds which exhibit no fluorescent properties, the lowest grade possible is Very Slight which indicates the diamond exhibits a slight glow that is difficult to see under ultraviolet light. On the other end of the spectrum, diamonds graded as exhibiting Very Strong fluorescence emit a deep glow that is very easy to see under ultraviolet light.
In regular lighting conditions, fluorescence generally has no effect on a diamond's appearance. For diamonds with strong fluorescent properties, yellow diamonds may appear whiter and in rare cases, white diamonds may appear milky or oily.
Depth Percent
The depth percent of a diamond is the ratio of the depth of the diamond in comparison to the diameter of the diamond.
Table Percent
The table of a diamond refers to the largest facet located on the very top of the diamond. Table percent is the ratio between the width of the table and the width of the entire diamond.
Dimensions
There are 3 different measurements which comprise a diamond's dimensions: Length, Width, and Depth.
Round Diamonds: For round diamonds, measurements are listed as ##.## - ##.## x ##.## (ie. 6.50-6.57x3.88). The length is the shortest diameter of the diamond and the width is the longest diameter and these values are a range of the diameters of the diamond. The final value is the depth which is measured from the top of the table to the bottom of the culet.
Fancy Shape Diamonds: For fancy shape diamonds, measurements are listed as ##.## x ##.## x ##.## (ie 7.30x5.99x3.28). The length is the measurement of the longer side of the diamond and the width is the measurement of the shorter side of the diamond. The depth is measured from the top of the table to the bottom of the culet.
Ratio
The ratio of a diamond refers to the comparison of its length and width. To calculate the ratio, divide the length of the diamond by the width.
Please note: Only fancy shape (non-round) diamonds have a ratio. All round diamonds will show a value of N/A.