History of Diamond Grading in Australia

Blogs & News

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

De Beers Dimaonds Stores
De Beers Raises Marketing Budget to USD $140M

De Beers marketing spend this years is more than $140 million, This is the biggest De Beers[…]

Upper-Girdle Facet

An Upper-Girdle Facet refers to a triangle-shaped facet that is positioned along the girdle of a diamond,[…]

Wavy Girdle Girdle that is uneven in thickness and/or does not follow a straight plane around a diamond
Wavy Girdle

A wavy girdle refers to a girdle of a diamond that is uneven in thickness or does[…]

Diamond cut or shaped into a triangle, sometimes with curved sides.
Trilliant

A Trilliant cut, also known as a trillion cut, is a diamond shape characterised by its triangle-like[…]

Twinning Line

A Twinning Line is a specific type of diamond inclusion that appears as a line or ribbon[…]

Treated Diamond Diamonds that are artificially enhanced, to improve either colour or clarity
Treated Diamond

A treated diamond refers to a diamond that has undergone artificial enhancement to improve one or more[…]

Trigon

A Trigon is a unique feature found in some natural diamonds that is characterised by its triangular[…]

Toughness Measure of brittleness, or resistance to fracture and breaking
Toughness

Toughness refers to a diamond's resistance to fracture or breaking when subjected to impact or stress.

Table

The table is one of the most important facets of a polished diamond, situated at the very[…]

Table Size

Table size refers to the measurement of the table facet of a diamond, which is the large,[…]

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