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.

HPHT Treatment
HPHT (High Pressure High Temperature) Treatment

HPHT treatment refers to a method used to alter or enhance the colour of diamonds through the[…]

Diamond cut or shaped into a heart
Heart Cut

The heart cut is one of the most romantic and symbolic diamond shapes, often chosen for engagement[…]

Hearts and Arrows
Hearts & Arrows

The term Hearts & Arrows refers to a distinct and beautiful pattern that appears in some high-quality[…]

Understanding the Durability of Diamonds
Hardness

Hardness refers to a material's resistance to scratching or abrasion. When it comes to diamonds, this property[…]

Graining

Graining refers to faint wavy, hazy, oily, or shadow-like lines that can appear inside a diamond or[…]

Green Diamond: A Rare and Unique Natural Treasure
Green Diamond

A green diamond is a diamond that exhibits a natural green body colour, making it one of[…]

Grading Report: The Blueprint of a Diamond's Quality
Grading Report

A grading report, also known as a diamond certificate, is an official document issued by a recognised[…]

The term "grainer" is used in the diamond industry to describe a diamond’s weight in quarter-carat (0.25 ct) increments.
Grainer

The term "grainer" is used in the diamond industry to describe a diamond’s weight in quarter-carat (0.25[…]

The girdle helps protect the diamond from chipping and damage, particularly along its edges.
Girdle

The girdle helps protect the diamond from chipping and damage, particularly along its edges. A properly proportioned girdle[…]

Girdle Thickness

Girdle thickness refers to the width of the diamond's girdle, which is the outer edge separating the[…]

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