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.

The Mohs Scale of Hardness is a qualitative scale that ranks minerals based on their ability to resist scratching
Mohs Scale

The Mohs Scale of Hardness is a qualitative scale that ranks minerals based on their ability to[…]

Melee refers to small polished diamonds
Melee

Melee diamonds are small, polished diamonds that typically weigh less than 15 points (0.15 carats) each.

marquise cut is a diamond shape
Marquise Cut

The marquise cut is a diamond shape that is elongated and features two pointed ends, creating an[…]

Lower-Girdle Facets

The lower-girdle facets are crucial elements in the overall symmetry and brilliance of a diamond.

Understanding the Sparkle and Beauty
Life

Life in a diamond refers to the vivid, dynamic quality that gives the diamond its captivating brilliance,[…]

A loose diamond refers to a diamond that is not yet set in any type of jewellery
Loose Diamond

A loose diamond refers to a diamond that is not yet set in any type of jewellery.[…]

Knot

A knot is a specific type of inclusion found within diamonds. It refers to an included crystal[…]

Laser Drilling

Laser drilling is a treatment used to enhance the apparent clarity of a diamond by reducing the[…]

International Diamond Manufacturers Association
International Diamond Manufacturers Association

The International Diamond Manufacturers Association (IDMA) is a global trade organisation that represents the interests of diamond[…]

Irradiated Diamonds
Irradiated Diamonds

Irradiated diamonds refer to diamonds that have undergone a treatment process designed to change or enhance their[…]

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