History of Diamond Grading in Australia

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Explore DCLA’s legacy as Australia’s leading diamond authority. Learn our history, meet the founders, and discover our unmatched grading expertise.

Pavilion Depth Percentage
Pavilion Depth Percentage

The pavilion depth percentage is a crucial measurement in understanding how well a diamond performs in terms[…]

Pavilion Main Facets

The pavilion main facets are a crucial component of a diamond’s pavilion, contributing significantly to its overall[…]

Pavilion Angle

The pavilion angle is a key proportion in diamond cutting, referring to the angle between the girdle[…]

Pavilion Depth

The pavilion depth refers to the vertical distance from the girdle (the widest part of the diamond)[…]

strong blue under long wave ultraviolet light
Overblue

Refers to a diamond that fluoresces strong blue under long wave ultraviolet light

Pavilion

The pavilion is the lower portion of a diamond, extending from the girdle (the widest part) of[…]

Old Mine Cut

The Old Mine Cut is a historical diamond cut, first popularized in the 18th and 19th centuries.

Oval shaped diamond
Oval Cut

The oval cut is an elongated shape that can range from a perfect oval to a more[…]

chip
Nick

A nick is a small surface blemish found on a diamond, typically appearing as a tiny break[…]

Rough diamond Octahedron
Octahedron

An octahedron is one of the most sought-after crystal shapes for rough diamonds, featuring eight triangular faces[…]

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