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4 Cs der Diamantgraduierung
To be able to evaluate diamonds consistently and make them comparable, the so-called 4 Cs are used, which were introduced by the GIA (Gemological Institute of America). These 4 Cs...
4 Cs der Diamantgraduierung
To be able to evaluate diamonds consistently and make them comparable, the so-called 4 Cs are used, which were introduced by the GIA (Gemological Institute of America). These 4 Cs...
Legierungen
Since gold is a very soft metal, it is typically alloyed with other metals. Pure gold, also known as fine gold, is not suitable for jewelry production as it is...
Legierungen
Since gold is a very soft metal, it is typically alloyed with other metals. Pure gold, also known as fine gold, is not suitable for jewelry production as it is...