Home | Language: English
Collection
Sportiness
Technology
News
About Certina
Retailer / Customer support

DS Concept

Materials

Movements

Metal

Diamonds

Watch glass

Water resistance
THE+4+C'S+OF+A+DIAMOND
Cut
Many people confuse the quality of the cut with the shape of a diamond. The cut is the only direct influence of human beings to the diamond. A good cutter could play with the shape and the quality of the cutting to improve the quality of the diamond. The cut will influence the fire and sparkle of the diamond. Created in 1900 the brilliant cut is the most used cut. The Brilliant cut consists in 57 or 58 facets (with or without culet).

The cut for the watches setting is very demanding due to the fact that the diamonds are small and the setting in the stainless steel asks a perfect cutting. Certina diamonds are cut in the traditional Brilliant style without culet.
The Certina’s diamond certificate shows a 32/24 which is the total number of facets (crown-girdle/pavilion) excluding the table.

Colour
The colour describes the amount of colour the diamonds contains. The diamonds may be green, red, pink, blue and many other fancy colours. The most common colours are brown and yellow. The diamonds we use in the watch industry are yellow. The scale of colour ranges from colourless to pale yellow with an infinite variety of subtle intermediate hues. The rarest of the diamonds colours are white or colourless. So, the more colourless the diamond is, the more valuable it is.

For the colour grading many scales exist. The most used are the “Wesselton scale” for trade and the “D to Z scale” (from GIA) as official scale.

The colour scale is broken down as it follows:
 
 
Hue GIA Scale Wesselton Scale
 
Color Less D Jager
E River
F River
 
Near Color Less G Top Wesselton
H Wesselton
I Top Crystal
J Crystal
 
Faint Yellow K Top Cape
L Top Cape
M Cape
 
Very Light Yellow N Low Cape
O Very Light Yellow
P Very Light Yellow
Q Very Light Yellow
R Very Light Yellow
 
  S to Z colours  
 
 
The colour of the Certina diamonds is Top Wesselton due to the fact that the setting in white metals does not allow any colour.
 
Clarity
The clarity describes the clearness of a diamond. Most diamonds have imperfections in them. The internal imperfections are called inclusions and the external blemishes. The clarity is determined by the severity of the inclusions and blemishes.

The clarity scale is broken down as it follows:
 
 
FL, IF Flawless, Internally Flawless
 
VVS1, VVS2 Very, Very Slightly Included
 
VS1, VS2 Very Slightly Included
 
SI1, SI2 Slightly Included
 
I1, I2, I3 Included
 
 
Carat-weight
The carat is a standard unit of measure that defines the weight of a diamond (and gems).
One carat is equal to 1/5 of a gram (in the trade, the diamonds are also measured in points, i.e. 1 carat = 100 points).

Certina certifies that its diamonds are in respect with the Kimberley process certification scheme and the “System of Warranties”:

"Our diamonds have been purchased from legitimate sources not involved in funding conflict and are in compliance with the United Nations resolutions. We hereby guarantee that these diamonds are conflict-free, based on personal knowledge and/or written guarantees provided by the supplier of our diamonds."

CONFLICT DIAMONDS AND THE KIMBERLEY PROCESS
Need of warranty declaration for trading with diamonds
 
Legal Disclaimer Credits
A Company of the Swatch Group