Diamond Education

Yellow gold oval diamond ring with a leaf detail at the gallery, photographed in soft light

Can a Diamond Be Scratched?

A diamond can be scratched, but only by another diamond. GIA rates diamond 10 on the Mohs scale and describes it as so hard that only a diamond can scratch...

Can a Diamond Be Scratched?

A diamond can be scratched, but only by another diamond. GIA rates diamond 10 on the Mohs scale and describes it as so hard that only a diamond can scratch...

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,...

Yellow gold oval diamond ring with tapered baguette side stones, photographed in profile on a pale cloth

What Do Girdle and Culet Mean on a Diamond Report?

The girdle is the narrow rim that separates the crown from the pavilion, and the culet is the small facet or point at the bottom of the stone. We explain...

What Do Girdle and Culet Mean on a Diamond Report?

The girdle is the narrow rim that separates the crown from the pavilion, and the culet is the small facet or point at the bottom of the stone. We explain...

Yellow gold elongated cushion diamond solitaire, photographed on a cream cushion

What Are Polish and Symmetry Grades on a Diamond?

Polish describes how smooth a diamond's facet surfaces are. Symmetry describes how evenly those facets are shaped and aligned. We explain the GIA grades and how they relate to the...

What Are Polish and Symmetry Grades on a Diamond?

Polish describes how smooth a diamond's facet surfaces are. Symmetry describes how evenly those facets are shaped and aligned. We explain the GIA grades and how they relate to the...

Side and inner view of a yellow gold oval diamond ring with a plain inner shank and side stones on the shoulders

What Do Table and Depth Mean on a Diamond Report?

Table is the large flat facet on top of a diamond. Depth is the height from that table to the culet, usually given as a percentage of the width. We...

What Do Table and Depth Mean on a Diamond Report?

Table is the large flat facet on top of a diamond. Depth is the height from that table to the culet, usually given as a percentage of the width. We...

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