How to choose the right diamond?

Investment diamonds require a deep knowledge of the whole quality range and of market conditions: this is why investors need the advice of expert consultants who can support and safeguard them during the purchase and sale.

The quality and - as a consequence - the value of diamonds depend on 4 factors, the so-called "4 Cs"


The ideal combination of these 4 factors gives the highest value of a diamond.

Investment diamonds must distinguish themselves through precise and distinctive features such as a high colour quality, a high pureness, a good cut, a weak fluorescence or - even better – no fluorescence at all.

There is an unavoidable “fifth C" particularly as far as investment diamonds are concerned: