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.

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)[…]

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Do you keep a record of my diamond grading certificate?

Do you keep a record of my diamond grading certificate

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?

I want to get a diamond certified before I buy it, what should I do ?

I want to get a diamond certified before I buy it, what should I do ?

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

What are “synthetic” diamonds?

My jeweller will not supply me with a certificate from an independent diamond grading laboratory, what should I do?

My jeweller will not supply me with a certificate from an independent diamond grading laboratory

Can you identify the latest diamond simulants, diamond treatments, and synthetic diamonds?

Can you identify the latest diamond simulants, diamond treatments, and synthetic diamonds?

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