Precious stones: the diamond

diamant blanc, diamant fancy et diamant noir

THE DIAMONDS

Certainly you will not become diamond dealers by reading this guide, but the information which it contains will be very useful to teach you the bases of estimation of this timeless stone.
And to make you dream, discover our shopping list so precious!

 

diamant blanc

THE WHITE DIAMOND

A little history...

The diamond is considered as the queen of gemstones. The Greeks gave her the name of Adamas, symbol of power and courage. In the nobility, the symbolism of the diamond is wealth and sovereignty. In Europe, we lent her the power of protection against the enemies and the poisons. Today, the diamond is considered as universal symbol of love, constancy and purity. There is a stone of predilection for engagement rings.

India was the first producing country of diamonds. The first tracks of production are in the mines of Golconde. The mines were exploited up to depletion of resources. Today the main producing countries of diamonds are South Africa, Botswana, Angola, Congo, Guinea, Russia and Canada.

THE 4 C

4C of the diamond, four absolute criteria for assessing the quality and value of this gem. These criteria are: color (Color), cutting (Cut), purity (Clarity) and weight (Carat).

THE COLOR (Color):
more a diamond is colorless, the more it has of value. The the most used color scale is that of the GIA (Gemological Institute of America), which breaks down as follows:

 D → exceptional white +
 E → exceptional white
 F → extra white +
 G → extra white
 H → white
 I → nuanced white

 K à L → slightly tinged
 M à Z → tinged

Teintes diamant blanc

 

THE CUTTING (Cut):
The size reveals the brightness of the diamond. More the size is good more the diamond will shine. It is one of the most important valuable criteria. The most known size is the brilliant, it account 56 facets + one. The quality of the cut is signified as follows:

CUT GRADE: global quality of the cutting of the stone. 4 levels: Excellent, Very Good, Good, Fair.
SYMETRY: assessment of the measures and angles. 4 levels: Excellent, Very Good, Good, Fair.
POLISH: stone finish, "polished". 4 levels: Excellent, Very Good, Good, Fair.

 

THE FORMS OF THE MOST CLASSIC CUTS
Tailles

 

THE PURITY (Clarity):
One it defined according to the number of visible inclusions in a diamond. Most of the diamonds contain very small natural inclusions. The number of inclusions, their sizes and their types determine the value of the stone. The more the number of inclusions is big, the more the stone loses of its value. The degrees of purity are estimated as follows:

FLAWLESS (FL) : absence of internal and external default.
INTERNALLY FLAWLESS (IF) : loupe clean. Also appears under the names: Pure to 10x magnification or Loupe Clean.
VVS1, VVS2 et VVS (Very Very Small Inclusions) : very tiny inclusions very hardly visible with a magnifying glass
VS1, VS2 et VS (Very Small Inclusions) : very small inclusions hard to see with the magnifying glass.
SI1, SI2 (Small Inclusions) : small visible inclusions in the magnifying glass but not in the naked eye.
P1 : inclusions easily visible with a magnifying glass and hardly visible to the naked eye and not affecting the shine.
P2 : big and/or numerous inclusions easily visible to the naked eye and affecting slightly the shine.
P3 : big and/or numerous inclusions very easily visible to the naked eye and distinctly affecting the shine.

 

THE WEIGHT (Carat):
One carat is equal to 0.20 g. The word "carat" come from "Kuara" carob seed, the fruit of the carob tree. Due to their constant weight, the Kuara is used as counterweight for scales, of the ancient times up to 1907.
The weight is measured in hundredths and the carat is divided into 100 points. There is talk of a "25 points" to talk about a 1/5 of a carat and a "half point" to talk about a 1/2 carat. But beware, weight is not the only factor that determines the value of a diamond. Big does not necessarily mean better. The carat is not dissociated from other 4C mentioned above. Color, cut and purity are essential to the price estimate.

carats

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Shopping list

 1 and 10 : creations FRED
 2 : creation TOURNAIRE
 3 : creation FIANA

 4 : creation CARTIER 
 5 : creation DINH VAN
 6 : creation MESSIKA

 7 : creation DIAMIANI
 8 : creation ÉLISE DRAY
 9 : creation DIOR

11 : creation MAUBOUSSIN 
12 : creation PIAGET 
13 : creation CHAUMET

 

diamant fancy

THE FANCY DIAMONDS

A little history...

The diamonds of colors (Fancy Diamond) are particularly rare and precious. We find 1 diamond of color for 10 000 colorless diamonds. They are very small for the greater part do not exceed one carat. Contrary to the colorless diamonds, the more the coloring of the diamond is intense, the more its value increases. They exist in almost all the tints and in the very diverse intensities. Yellow, pink, blue, red, orange, green, black, cognac, champagne, etc.... Certain colors are extremely rare, as the red, the green, certain intensities of blue or pink. It is important to note that the so-called colored diamonds synthetic or processed, are in no way comparable to the rarities offered by nature.

THE COLORS

The color is estimated according to 3 parameters:
HUE : main color of the stone and eventually the secondary color.
TONE : of very clear to very dark.
SATURATION : the intensity or vividness of the main color (faint to vivid)
The GIA uses nine levels to assess the color of a diamond Fancy:
FAINT : low hue.
VERY LIGHT : very light hue.
LIGHT : clear hue.
FANCY LIGHT : clear hue but more pronounced.
FANCY : frank hue.
FANCY DARK : dark hue.
FANCY INTENSE : intense hue.
FANCY DEEP : deep hue.
FANCY VIVID : vivid hue.
To note : A colored diamond "fancy vivid" more intense, will be more expensive than a colored diamond "fancy light".

A multitude of beautiful colors of Fancy diamonds on www.fancydiamonds.net

Diamants Fancy

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Shopping list

1 : creation DIAMEE
2 and 7 : creation CHAUMET
3 and 4 : creations ANNOUSHKA

5, 6 and 11 : creations TIFFANY&co
8 : creation TOURNAIRE

10 : creations BOODLES
12 and 13 : creation DE BEERS

 

diamant noir

THE BLACK DIAMOND

The black diamond is certainly the most fascinating diamond. Its rarity, its brightness, its mysterious beauty make it unique. By consulting shopping-list at the bottom of this article, the report is fast made, the black diamond is the rock n'chic by excellence. And so by chance, one wanted to make me one little present, the ring ape of Elise Dray or Valérie Danenberg's death's-head it suits me perfectly! (Mister llule?)

A little history...

The black diamond or Carbonato is certainly less known than the white diamond, but he is more and more appreciated. Very rare, one finds it only in Brazil and in Republic Center Africa. Rejected until 1999 by the creators, the Swiss jeweler De Grisogono who launched brilliantly this unusual stone.
But the success of the black diamond, the growing demand and the fact of its rarity, make that one finds most frequently on the market of diamonds handled by irradiation (color enhanced). This is one of data important to know, because very few jewelers will make the effort to specify it during the sale. So, ask the good question during your purchase: natural or stained diamond?
Another datum to be taken into account is the quality of the cut. Yet the same index of hardness as the white diamond, the black diamond is more difficult to cut and especially to polish, he thus asks for a particular know-how. The stone can lose half of its value if the size is poor quality. She has to present neither of asperity nor any visible defect to the naked eye.
In summary the black diamond is rare and expensive, a jewel with moderate price is for blow sure realized with coloured stones, to offer you of real black diamonds, look at rather the side of the place Vendôme …

Luxurious shopping-list for wealthy fortunate girls ...

Shopping list

1 and 2 : creations ÉLISE DRAY
3 : creation POMELLATO
4, 6 and 10 : creations GRISOGONO

5 and 11 : creations VALÉRIE DANENBERG
7 and 9 : creations FRED

8 : creation LYDIA COURTEILLE
12 : creation CHOPARD

 

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