When you are planning to purchase a diamond it is important that you know how diamonds are classified. Today, the 4Cs of diamond quality is the universal method for assessing the quality of any diamond, anywhere in the world. Moreover, there's the "Fifth C" : Certificate
The purpose of a diamond certificate is to offer you the highest possible level of security and confidence; this certificate guarantees a diamond's authenticity and describes the essential features which are the 4C's.
IRAM provides its customers with “IRAM Warranty Certificate” thus guaranteeing the value of its quality products.
IRAM Warranty Certificate describes the purchase item “Diamonds 4 Critical Cs; namely Cut, Clarity, Color, and Carat Weight.
Each “IRAM Warranty Certificate” issued is uniquely numbered, and corresponds to one individual diamond. Each Certificate is laminated to prevent tampering or damage when stored.
GIA is the oldest, largest, and one of the most respected independent diamonds laboratory in the World. GIA issues certifications for diamonds in the form of a Grading Report or Dossier. Unlike most other labs, GIA is not owned or partially owned by diamond wholesalers or retailers, and is a non-profit organization. It is attributed to GIA the development of the "four Cs" diamond rating system used almost universally nowadays.
HRD Antwerp believes that all customers need to be informed correctly about the diamonds they buy. That is why, HRD Antwerp's Diamond Lab also examines whether a diamond has been subjected to any unreported treatment in order to alter its appearance or whether it is synthetic. By Synthetic it means that the Diamond was made in laboratories and not born millions of years ago in nature.
Before there was any AGS Laboratories, there were other diamond grading laboratories. AGS Laboratories provide its services exclusively to Jewelry trade. Members of the “American Gem Society” are an elite group of jewelers bonded by a mission of consumer and customers protection by ensuring the adherence of Jewelers Producers to Strict Standards of Diamond Grading — with a founding tenet of consumer and customers protection first and foremost.