Diamond Education

Yellow gold elongated diamond ring with engraved and pierced shoulders, photographed in profile on a pale surface

What Is the Proportion Diagram on a GIA Report?

The proportion diagram on a GIA report is a small side view of the diamond, drawn to the stone's measured proportions. We explain what the graphic shows, how it relates...

What Is the Proportion Diagram on a GIA Report?

The proportion diagram on a GIA report is a small side view of the diamond, drawn to the stone's measured proportions. We explain what the graphic shows, how it relates...

Yellow gold oval diamond ring with tapered baguette side stones, worn on a hand

What Are the Clarity Plot and the Laser Inscrip...

The clarity plot is a map of a diamond's inclusions and blemishes on a GIA report. A laser inscription, when there is one, is a microscopic mark on the girdle,...

What Are the Clarity Plot and the Laser Inscrip...

The clarity plot is a map of a diamond's inclusions and blemishes on a GIA report. A laser inscription, when there is one, is a microscopic mark on the girdle,...

Pink emerald cut diamond held in tweezers

How to Read a GIA Diamond Certificate

How to actually read a GIA diamond certificate — what each section means and how to verify it's genuine.

How to Read a GIA Diamond Certificate

How to actually read a GIA diamond certificate — what each section means and how to verify it's genuine.

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