The weight, cut, colour and purity determine the quality of a diamond. But even then, it seems not so obvious to know how to choose a diamond. For the most part, it obviously depends on your taste and budget. The material and shape of the jewel in which the diamond is to be set also play a role. As a layman, you can verify the authenticity by means of the certificate. The BAUNAT team will gladly advise you further with your personal choice.