If you are going to marry or maybe you just want to buy a gift for your love, buying a diamond is always a relevant investment.
The precious gem requires a certificate of guarantee certifying the quality of the stone. To be able to evaluate the quality of a diamond without being a professional you need to have some information about the certificate.
The most accredited certificates in the world are HRD (Diamond High Council - Hoge Raadvoor Diamond) and GIA (Gemological Institute of America).
Scroll down the page to find out what it is in detail.