Wholesale Diamond Price Information, Advice & Guidance before Buying
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GIA Diamonds

certification for
Loose diamonds

Why everyone prefers GIA Diamonds

If you are educating yourself on how to buy diamonds, then you have surely come across diamond certificates and diamond grading. When you buy certified loose diamonds, it means that an objective gem laboratory such as GIA, IGI, AGS or HRD as assessed the quality features of the diamond according to their own methods and grading system. This includes the 4Cs (carat, clarity, color and cut) as well as many other features. When it comes to diamond grading, the most accurate gem laboratory is without a doubt the GIA. The GIA is considered to be the most authoritative source on diamond grading, as they uphold the highest standards recognized by the diamond industry worldwide. In fact, the grading systems from other gem labs are adapted from the original loose diamond grading system developed by the GIA. That is why true diamond experts will always prefer to work with GIA certified diamonds.

Understanding GIA Certification

gia certified diamondsThe GIA certificates issued with graded loose diamonds are actually fairly easy to read, once you know what you are looking at. The GIA report number is an identification code that matches a grading report to a diamond. The grading report number is laser inscribed on the girdle of the diamond, visible under 10x magnification. The measurements are important to a diamond’s shape and sparkle, and every diamond shape has different ideal measurements. The 4Cs are noted in the grading results, which in the GIA certificate shown here are 3.01 carat F color VS1 clarity and Excellent cut grade. Polish and Symmetry are part of the cut grade, and if all three are graded excellent by the GIA, then we call it “triple x”. This particular 3 carat diamond has a medium fluorescence, which will decrease its value when compared to an identical diamond with no fluorescence.

GIA Certificates contain the following information

• Report number
• Laser inscription registry
• Shape and cutting style
• Measurements
• Carat weight
• Color grade
• Clarity grade
• Cut grade
• Finish
• Polish
• Symmetry
• Fluorescence
• Comments
• Plotting diagram
• GIA color, clarity and cut scale
• Proportion diagram
• Key to symbols
• Security features


Only buy diamonds online accommodated with GIA certificates

When you want to buy diamonds online, whether loose diamonds or mounted onto jewelry, always insist on working with GIA certificates. This safeguards that whatever loose diamond you intend to purchase, everyone will agree on the quality. There is no question that the quality degree for GIA certified diamonds is below any other standard or grading institution in the diamond industry. If you would purchase loose diamonds issued with another certificate, it might seem appealing now because of a higher perceived color grade for example. But when you intend to sell it at a later stage, all diamond buyers will insist on working with GIA certificates. And you wouldn’t want to see your purchase decrease in value. That is why we will always advise you to buy GIA certified diamonds: to guarantee quality and true value. Ask for a free quote to receive advice from our diamond experts and see what the best diamond would be within your set budget. Through 50 years of experience, we have set up a worldwide network of loose diamonds at wholesale prices – all GIA certified.

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Step 1: DIAMOND SHAPE: How to choose ?

fancy colors

STEP 2: DIAMOND SIZE: How to choose ?

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GIA Jewelers Board JBT Website