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Certified Diamonds




What are Certified Diamonds?

When shopping for a loose diamond it is extremely important that you buy a certified diamond that has been independently certified. Diamond grading laboratories such as GIA, HRD, AGS & DCLA are all internationally recognised and independent. You can compare one certified diamond with a particular weight and quality with other certified diamonds of similar weight and quality to determine which certified loose diamond has the better value.

A certified diamond is a diamond that has been tested, examined and graded by a team of independent fully trained gemologists who then issue a Diamond certificate for that diamond.

A diamond certificate is a blueprint of a loose diamond that has been certified.
A diamond certificate can also be called a diamond grading report or diamond dossier. The diamond certificate documents the diamond's exact measurements and weight, as well as the details of its cut and quality. It precisely points out all the individual characteristics of the stone, inclusions and any flaws.

Diamond certificates allow you to make an informed choice and help you select best quality diamond when buying a loose diamond for an engagement ring.


Certified Diamonds - Diamond Certificates

 Why Buy Certified Diamonds?
Independent diamond certification is essential for authenticity and also insurance purposes.
A certified diamond provides consumers with confidence, security and increases comfort levels while making a decision on which loose diamond to purchase. Before purchasing a loose diamond, you should expect to review a copy of its diamond certificate, as this is your only guarantee of the quality and value of that diamond. Certified diamonds help provide consumer confidence.

A diamond certificate documents the characteristics of the diamonds quality; the colour, cut, clarity & carat weight of the diamond are verified by an independent company with no conflict of interest between buyer and seller.

Listed below are highly regarded Diamond Grading Laboratories that grade and certify diamonds to an internationally recognised standard, and are recognised by the national and international diamond and jewellery associations. Independent certification is essential. It provides an accurate, unbiased description of the quality of the diamond and assures you that the diamond is natural and untreated.

The true test to evaluate a diamond is to view it in person and compare it with other diamonds. Nothing beats seeing a diamond in person to determine whether it is a 'good' diamond to your eye or not. Diamond appreciation is a very personal thing and different people will prefer different things about different diamonds. At the end of the day all the numbers and photos in the world mean nothing if you do not like the diamond in person.

Many jewellers and diamond dealers will use terms like Hearts and Arrows, Ideal, Excellent, Russian Cut, Belgium Cut, Fine Make and others to describe their diamonds, with the intention of portraying them as 'better' than others. Be wary of accepting these terms as is. They are especially dangerous when assigned to diamonds by the jeweller or diamond dealer themselves without third-party independent support.

 Are all Certified Diamonds Equal?
NOT ALL LABS GRADE THE SAME

The table below details the various laboratories and the different grading scales they use, you will notice that there is an over lap in some of the grades and that the top grade is not the same for each laboratory and the certified diamonds.

Certificate Grading Comparison Chart

GIA, DCLA and HRD all have Excellent as their top grade, whilst AGS splits its top grade category into Ideal and Excellent.

DCLA & GIA have the same grade categories except DCLA calls its second lowest grade Medium whereas GIA calls it Fair. AGS has the same breakdown of catgeories as both DCLA & GIA except for the top grade of Excellent where it breaks down that category into two sections of Ideal - AGS0 and Excellent - AGS1.

AGS is the only Grading Laboraotory that actually has a grade called Ideal. The term Ideal Cut Diamond is a widely and quite often misused marketing term used by Jewellers and Diamond Dealers to describe a cutting style based on proportions rather than an actual Ideal grade by a laboratory unless the diamond has been certified by AGS with and AGS grade of Ideal - AGS0.

Colour Grade Comparison Chart&nbsp    Clarity Grade Comaprison Chart

 Comparing Certified Diamonds
When comparing Certified Diamonds & Diamond Certificates it is important to refer to these 3 grading scales for cross referencing. However the true test to evaluate a diamond is to view it in person and compare it with other diamonds next to each other at the same time.

There are many different diamond grading laboratories available to the diamond-buying public. Some of the more well known grading laboratories are: GIA (Gemological Institute of America), DCLA (Diamond Certification Laboratory of Australia), AGS (American Gemological Society), HRD (Hoge Raad Voor Diamant; Diamond High Council), EGL (European Gemological Institute) and the IGI (International Gemological Institute).

Each of these diamond grading laboratories has their own criteria and method of grading loose diamonds, but they all operate within a high set of parameters, in regards to grading a diamond's attributes and dimensions. Be aware that as each grading laboratory has its own methods, each grading laboratory also has its own expense guides for preparing a certificate and these grading laboratories differ in their standards and level of strictness.

GIA's standards for grading have set the bar for all other gemological laboratories. DCLA & AGS are on par with GIA for grading standards. In fact, it is the AGS grading for Cut that served as an impetus for the GIA to recently include Cut grading to their grading reports. HRD out of Antwerp, Belgium is also a greatly respected name in the diamond industry. A certificate from any of these grading laboratories - GIA, DCLA, AGS, HRD - can be considered accurate, reliable and trusted. In Australia we highly recommend DCLA - Diamond Certification of Australia - as they are the only internationally recognised laboratory in Australia and is one of only five laboratories worldwide recognised as an International Diamond Council (IDC) laboratory.

Another pair of well known international grading laboratories that certify loose diamonds are EGL - European Gemological Institute and IGI - International Gemological Institute. EGL created the grade of SI3 for Clarity. This is the equivalent of the I1 or P1 clarity grading by GIA, DCLA, AGS & HRD standards (which do not accept the SI3 grade in their grading scales). A diamond's clarity grading has a greater influence on the price of a diamond and usually increases the value more than the colour grading of a diamond.

It is important to remain aware of the facts and differences with certification and the process as well as the different grading standards each diamond grading laboratory offers. While it might be possible to find certified diamonds with the same grade notably cheaper which have certificates from different grading laboratories, there are no huge bargains within the diamond industry. Remember, if a certified diamond sounds too good to be true, it probably is and there usually is a reason.

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Search for superior quality certified diamonds at Diamond Imports. We have the largest selection of Independently Certified Diamonds in Australia - All our diamonds are in stock and guaranteed by independent certification. Our diamonds are certified either by DCLA - Diamond Certification Laboratory of Australia, GIA - Gemological Institue of America, HRD - Diamond High Council, or AGS - American Gem Society. Buy certified diamonds safely and with confidence from Australia's Leading Certified Diamond Wholesaler.

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