Characteristics of the diamonds
To really understand what determines the quality of a diamond, it’s important to know that it is determined by four criteria. Two diamonds identical in shape aren’t necessary identical and don’t always have the same value.
The diamond must be ideally cut to maximize light propagation. The majority of diamonds are cut with 58 facets. There are diamonds with brilliant, marquise, pear, heart, oval, emerald and princess cuts.
The mass of a gemstone is measured in carats. A carat is equal to 100 points. A 25-point diamond will weigh one quarter of a carat. Two diamonds weighing the same often have very different values, depending on their quality.
The degree of purity of a diamond varies depending on the number, the dimension, the nature and the position of inclusions in the gemstone. The analysis is performed by experienced gemologists using an IGIscope or a 10 X magnifying glass. These inclusions represent the imprint of the diamond.
The identifications are :
FL: pure under magnifying glass (10 X)
IF: pure in the inside (10 X)
VVS1/VVS2: very very small inclusions (10 X)
VS1/VS2: very small inclusions (10 X)
SI1/SI2: small inclusions (10 X)
I1/I2/I3: imperfect inclusions visible to the naked eye
The colour of the diamonds varies: colourless to lightly tinted of yellow. There also exist diamonds of all colours, extremely rare and of great value.
Range of colour:
G/H/I/J: almost colourless
K/L/M: Faintly tinted, usually yellow
N/O/P/Q/R: Very lightly tinted, usually yellow.
S/T/U/V/W/X/Y/Z: Lightly tinted, usually yellow.
An authentication certificate should always come with the diamond jewel you have just bought. A diamond certificate, also called diamond report or diamond quality report is a report identifying its weight, clarity, cut and colour. Once you buy the diamond, you should get this certificate, which guarantees you the details of your gemstone as well as its value.
If you purchase Canadian diamonds, a certificate will also be given to you.