The first C of the 4C’s of Diamonds. All International gemological institutes have established a scale of 23 letter grades indicating a diamond’s color. Diamonds adapt yellow colour due to the amount of Nitrogen molecules present in them. The more nitrogen molecules, the more diamond adapts yellowness from whiteness. All other colours like brown, pink, blue etc are present due to the molecular displacement at the time when diamonds are being formed beneath the Earth.
D, E, F – Diamonds are white with no colour seen from table or from the lower part of the diamond. They are of the highest grades and are rare.
G, H, I, J – Diamonds are nearly colourless with whitish appearance seen from the table but, slightly yellowish from the lower part of the diamond. Still, while the diamond is being set in the jewellery it appears to be white.
K, L, M – Diamonds give very slight yellowish tone appearance from the table and from the lower part of the diamond.
N to Z – Diamonds give deep yellowish tone appearance from the table and from the lower part of the diamond as it goes down in the ascending order of grades. If the colour is deeper than Z, then the deep yellow diamond is termed as fancy yellow colour which is also very rare and valuable.
We hope that this has helped you to better understand diamond color
This is second C of the 4C’s of Diamonds.
Sometimes while formation of diamond few carbon molecules do not crystallize leaving a black point or group of points inside a diamond .Due to the heat and pressure, a diamond might develop crack or a white bubble. These are called inclusions of which some part can be removed while polishing a diamond but some inclusions cannot be removed and stays in the diamond .
Some diamonds have external flaws, which are called blemishes. The size and location of these characteristics determine how the diamond is graded on scale as:
IF – Internally Flawless , No inclusion in diamond and the diamond is clean
VVS (vvs1,vvs2) – Very Very Small inclusions
VS (vs1,vs2) – Very Small inclusions,
SI (si1,si2,si3) – Slighty Included.
I (i1,i2,i3) – Included in which incusion can be seen through naked eye
Diamond clarity can be seen through a 10X diamond eyeglass/loupe From IF to i3, the prices of the diamond goes down with the decrease in clarity depending upon the size of the inclusion and the number of inclusion in the diamond. In certificate one will find the clarity in the terms given above inside the bracket.
We hope this has helped you to better understand diamond clarity.
This is the Third C of Diamond. It can be classified into two things
Shape – Before buying diamond one must know that Diamonds are available in many shapes and sizes such as Round, marquise, Baguettes, Square princess, Pear, Heart shape, cushion and many more.
Cut – Cut of a diamond means the arrangement of all diamond facets symmetrically with each other in such a way that the diamond produced highest amount of brilliance and reflects the maximum amount of colours. A diamond cutter has to keep in mind three facts will cutting the diamond on the basis of which the cut grades are given i.e-
Cut (Excellent, very good, good, fair, poor) – This grade shows the perfect measurement for the depth, width and angular measurement of the diamonds to measure the reflection and the light travel in the diamond. The diamond with excellent cut delivers the maximum brilliance and shine and the diamond with poor cut lacks the brilliance.
Polish (Excellent, very good, good, fair, poor) – This grade shows how well the diamond has been polished by a cutter. The excellent polish gives the best reflection but if the polish is poor , the diamond may lack reflection.
Symmetry (Excellent, very good, good, fair, poor) – This grade shows how the facets are in proportionate to each other and the measurement of all the facets. If the diamond is Excellent in symmetry then the appearance of the diamond will be good but if the diamond symmetry is poor, then the diamond appearance will be distorted
Cut, Polish and symmetry will be given in the diamond certificate of all Diamond grading laboratories.
The fourth C of the 4C’s of Diamonds. The weight of the diamond is one of the major factor while pricing the diamond. With increase in weight the value of the stone increases irrespective of colour, clarity and cut. The unit for diamond weight is ct which is 1/5th part of a gram(5 cts =1 gms). As the size of the diamond increases the per carat value + the total weight both increases simultaneously.
Two diamonds of one carat each will be cheaper than one diamond of two carats. Both the weight are same but the per ct price of one carat stone of the same colour, clarity and cut will be much lower than a single diamond of two carats of the same specification. We hope this has helped you to better understand a diamonds carat weight better.