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RECOGNIZE A DIAMOND

GUIDE

This illustration allows you to correctly read the gemological certificate that classifies a diamond.

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THE DIAMOND AT THE CENTRE

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C-Joys (certified joys) has a consolidated experience in the domain of gemstones.

We at C-Joys manufactures certified jewelry using the best gems.

In order to offer you the best quality-price products, C-Joys craft 18K gold jewelry, using diamonds of superior cutting requirements.
The color classification is not less than F / G as well as the two main version of clarity requirements:
V.S. or S.I. We at C-Joys are very passionate about jewelry.

We cherish the aesthetic of the gemstones and respect the material value that diamonds and jewelry represent.
A piece of jewelry expresses a unique range of emotions. C-Joys focus the attention on the amazing world of diamonds.

With our experienced craftsmanship we enhance the exceptional beauty and the magnificence of diamonds. Nature has provided us with a sublime gem such as the diamond. We believe that making available certified quality gemstones like diamonds to our customers represents the ultimate bliss.

QUALITY CONTROL

All diamonds selected by our gemologists go through at least three rigorous selections before they pass the final inspection of specialists working for the best gemological testing centers. Every diamond certified by C-Joys goes through a quality check and it follows through the standard protocols for the international registration.
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EDUCATION AS EMPOWERMENT OF THE CUSTOMER

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An important part of our “company mission" is it, to inspire and empower our customers with the knowledge in the domain of diamonds. We are willing to educate our clients to the understanding of a few basic diamond characteristics stated in a certification document of a gemstone.
We believe that additional awareness in the world of precious gemstones will give our customers the opportunity to be more confident during the process of a diamond selection and purchase.
We at C-Joys cherish the idea that our customers can enjoy the process of analyzing the various but distinguished
characteristics of a gemstone, described in the jewel certificate.
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HOW TO DEFINE A DIAMOND

THE “4C”

Below are the characteristics that classify a diamond accordingly to the criteria of the "4C":
 

CARAT – COLOR – CLARITY – CUT

There is no diamond in nature that has the same characteristics of another one. Each diamond is unique. This is what makes this gemstone so special. The criteria of evaluation of the "4Cs" - carat, color, clarity and cut – gives to our customers the opportunity to evaluate the specific characteristics of each diamond. C-Joys implements this quality rating criteria, so that our customers are able to appreciate both the value of the diamond and the jewel, where this gemstone is set and that further enhances the diamond’s splendor.

Carato 1

CARAT

The carat weight of a diamond is an important factor to take into strong consideration because the price of a diamond increases proportionally to the increase of the weight. The carat is the unit of weight of a diamond and it corresponds exactly to 1/5 of a gram and is divided into cents

(also called points – 1 CT = 100 / 100).

0.05 - 10 mg
0.05 - 10 mg
0.10-20mg
0.10-20 mg
0-15 - 30 mg
0.15 - 30 mg
0.25 - 50 mg
0.20 - 40 mg
0.50 -100 mg
0.25 - 50 mg
0-75 - 150 mg
0.50 - 100 mg
01--0-05-10mg.png
0.75 - 150 mg
01--0-05-10mg.png
1.00 - 200 mg
0.05 - 10 mg
1.25 - 250 mg
0.10-20mg
1.50 -300 mg
0-15 - 30 mg
1.75 - 350 mg
0.25 - 50 mg
2.00 - 400 mg
0.05 - 10 mg
2.50 - 500 mg
0.10-20mg
3.00 -600 mg
0.10-20mg
4.00 - 800 mg
0.25 - 50 mg
5.00 - 1000 mg
0.25 - 50 mg
7.00 - 1400 mg

Color 2

COLOR

Diamonds are coming in various nuances of color, from green to yellow, from blue to pink, defined "Fancy Colors": some of these are very rare and may reach outstanding quotation price. The color range that can commonly be found in diamonds is the white color and it encompasses a classification that starts from D to Z
  • Diamonds "D color" and "E color" bear a color defined WHITE OUTSTANDING (respectively "D" Exceptional white" and "E exceptional white"). The D color diamond it is so white to be considered colorless, though with some hints bluish nuances.
  • The F and G color diamonds have a color defined WHITE RARE (respectively "F rare white" and "G rare white"). Both are perfectly white, whether they are analyzed frontally, or sideways.
  • The H color diamonds have a color defined WHITE. A color H diamond will show a white color on a frontal analysis, while on a lateral analysis it will show a few hints of yellow shades.
  • All diamonds showing a color between I and Z have, as you go down the scale of evaluation, will present a more intense yellow tone before turning into the " Fancy Yellow", a color so intense to be part of the color scale called Fancy Colors.
0.05 - 10 mg

D

Exceptional White +
Exceptional White

E

Exceptional White
0-15 - 30 mg

F

Rare White +
Rare White

G

Rare White
White

H

White
Slighty Tinted White +

I

Slighty Tinted White +
Slighty Tinted White

J

Slighty Tinted White
Tinted White +

K

Tinted White +
Tinted White

L

Tinted White
Tinted Colour

M

Tinted Colour
Tinted Colour

N-O

Tinted Colour
0.25 - 50 mg

P-R

Tinted Colour
Tinted Colour

S-Z

Tinted Colour

Clarity 3

CLARITY

The examination of the clarity of diamonds is implemented with the use of a microscope. However, there is an additional stage of evaluation: the degree of clarity of the diamond is finally determined through the use of a lens that magnifies the gem by ten times (10x). The estimate of the clarity encompasses the size of the gem, the position and the contrast of the inclusions.

The scale of evaluation used has a ranking ranging from L.C. (loupe clean) to I.F. (internally flawless) to Piqué.

  • LC (loupe clean) Examining a diamond through a lens that magnifies the image up to ten times (10x) the gem will not show any visible inclusion.
  • VVS1 / VVS2 (very very small inclusion). Il diamante presenta una o più inclusioni puntiformi, leggermente superiori a 5 micron. Tali inclusioni sono visibili analizzando il diamante con una lente a dieci ingrandimenti (10x), ma sono veramente difficili da individuare, anche dall’occhio di un gemmologo esperto.
  • VS1 / VS2 (very small inclusion). The diamond has one or more point-like inclusions, slightly larger than 5 microns. These inclusions are visible analyzing the diamond with a lens that magnifies the image by ten times (10x).
  • SI1 / Si2 (small inclusion). The diamond has one or more inclusions, within a welldefined area (not small dots). Such inclusions in a diamond are not too easy to be found even through the experienced eye of gem specialist using a lens that magnifies the image by ten times (10x). Without a lens this inclusion is not visible to the human eye.
  • P1/P2/P3-I1/I2/I3 (piqué/inclusion). The diamond has one or more inclusions visible to the eye. The gems classified P2-
  • P3 that shows such visible inclusions may compromise the brightness of the diamond. An assessment of the diamond clarity provides as well an evaluation of the internal characteristics to the diamond. Any diamond inclusion is not part of the external characteristic evaluation (such as scratches, notch etc.).

LC

Loupe Clean
Very Very Small Inclusions

VVS1

Very Very Small Inclusions
Very Very Small Inclusions

VVS2

Very Very Small Inclusions
Very Small Inclusions

VS1

Very Small Inclusions
Very Small Inclusions

VS2

Very Small Inclusions
Slighty Tinted White +

SI1

Small Inclusions
Slighty Tinted White +

SI2

Small Inclusions
Piquè

P1

Piquè
Piquè

P2

Piquè
Tinted Colour

P3

Piquè

Clarity 4

CUT

The cut is another key feature of the diamond. The cut of a diamond includes three aspects of fundamental importance:

PROPORTIONS, FINISH GRADE and SYMMETRY

 
Proportions

 

PROPORTIONS

The PROPORTIONS represent the dimensions of all the parts that make up a diamond, defined as a percentage and compared to the diameter of the gemstone. The cutting proportions are fundamental for the stone to capture and project the maximum refraction of the light.
A stone with poor cutting proportions will show scarce grade brightness.

Finish Grade

 

FINISH GRADE

The finish of a diamond determines the accuracy in which the facets have been crafted on the gemstone and the quality their intersections. An exacting work is of the essence. Any possible cutting error will affect the final result of the stone’s brightness.

Simmetry

 

SYMMETRY

The symmetry calculates the level of perfection in the symmetrical arrangement of the diamond facets and any deviation of the lines in relation to an exacting symmetry.

 

All the cutting characteristics have a rating that can be ID (ideal) - not used from all analysis centers – EX (excellent), VG (very good) and GD (Good). Another important feature for the evaluation of a diamond is the FLUORESCENCE. The fluorescence of a diamond it is the luminosity they show when exposed to UV light rays. The scale of fluorescence encompasses the following degrees of perception: NONE (anything), SLIGHT (light),MEDIUM (average), STRONG (strong) - plus any other intermediate stage of evaluation expresses by gemological organization (very light, very strong and so on.).Some individuals appreciate the effect of fluorescence on diamond with a “L” color down because the stone presents frontally a light whiter than normal. Despite that, the fluorescence is usually considered a negative feature. Indeed, in color White diamonds it can slightly effect their brightness, (Especially strong fluorescence!) giving to the diamond brightness a slightly milky appearance.

SHAPE

The cut is what determines the shape of a diamond. Therefore a diamond can be cut into various shapes. The diamond cut in particular is the one that made this gem so well known.

Shape Brillante

DIAMOND

Shape Marchesa

MARQUISE

Shape Ovale

OVAL

Shape Cuore

HEART

Shape Lacrima

TEAR

Shape Smeraldo

EMERALD

Shape Principessa

PRINCESS

Shape Radiante

RADIANT