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The 4 Cs of diamonds


Each diamond is unique and must be evaluated individually. For this reason, the evaluation is carried out according to the international criteria. Worldwide, diamonds are classified according to the uniform system of 4Cs. Thus, the value of a diamond is not only determined by the carat number, but also depends on the cut, the clarity and the colour.

The first C is the Cut, i.e. the cut of the diamond. An experienced diamond cutter is needed to bring out the extraordinary beauty. The cut is crucial for the value and appearance of the diamond. For a brilliant sparkle and an impressive play of light, a perfectly executed cut is required.

Another C is Carat, i.e. the weight of the diamond. The term carat refers to a natural unit of measurement, whereby one carat corresponds exactly to 0.2 grams. The larger the diamond, the higher the price.

The third C is Colour and describes the colour of the diamond. Diamonds are found in almost all colours of the rainbow. The white stones are among the most popular and therefore also the most expensive. The stones are divided into 20 fine shades of colour. The variation of the diamonds can only be done by experts under certain light conditions and with standardised sample stones.

The last of the 4 Cs is Clarity, which describes the purity of the stones. Natural characteristics give each stone its own signature. The signature is often not visible to the naked eye. These features can be trapped minerals or fractures that can be attributed to the time the diamond was formed. The number, type, colour, size and position of these signatures influence the value of a diamond. In this process, the stone is closely examined by experts using a magnifying glass with 10x magnification. Very rare stones that do not show any inclusions or other blemishes are called “flawless”.