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.

artificially enhance the colour of a diamond
Annealing

Annealing diamond refers to a process in which diamonds are heated to high temperatures in a controlled[…]

Archaic Greek word from which the word ‘diamond’ is derived
Adamas

Archaic Greek word from which the word ‘diamond’ is derived. Adamas means 'indestructible'.

Abrasions can affect the polish grade of a diamond
Abrasion

Abrasion on a diamond refers to the process where the surface or facets of a diamond become[…]

An abraded facet edge in a diamond refers to the condition where the sharp edges of a diamond's facets have become worn, chipped, or dulled.
Abraded Facet Edge

An abraded facet edge in a diamond refers to the condition where the sharp edges of a[…]

Abraded Culet

An abraded culet refers to a diamond culet (the small facet at the bottom of the diamond)[…]

I have a diamond “valuation,” is this not the same as a diamond certificate?

I have a diamond “valuation,” is this not the same as a diamond certificate?

Synthetic Diamond DTC Diamond View
What are “synthetic” diamonds?

What are “synthetic” diamonds?

DCLA is Australia’s internationally accredited diamond certification laboratory.
Who are the DCLA and what do they do?

Who are the DCLA and what do they do?

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