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.

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,[…]

Step Cut A style of diamond cutting creating rows or steps of elongated facets
Step Cut

A step cut is a style of diamond cutting that creates a distinctive look with rows or[…]

Symmetry Degree and regularity in shape and placement of facets
Symmetry

Symmetry in a diamond refers to the degree of alignment and uniformity in the shape and placement[…]

Single-Cut

A single-cut diamond refers to an old-style cut that features only 16 facets in total – 8[…]

Scintillation

Scintillation refers to the sparkle or twinkle that a diamond exhibits as light reflects off its surface[…]

Name for the basic outline of a polished diamond
Shape

In the context of diamonds, shape refers to the basic outline or form of a polished diamond,[…]

Rough Diamond

A rough diamond is a diamond in its natural state, exactly as it is found deep within[…]

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