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.

Red Diamond A coloured diamond with a natural red body colour. Red must be the predominant colour, but it may be modified by shades of pink or purple. The colour in natural red diamonds is created by irregular crystal structure. Natural red diamonds are the most rare of all diamonds. Some red coloured diamonds with sufficient saturation fall into the valuable fancy red colour category of diamonds.
Red Diamond

A red diamond is an extremely rare and captivating coloured diamond with a natural red body colour.

diamond weight
Point

In the diamond industry, a point is a unit of weight used to measure diamonds and other[…]

Pinpoints Very tiny diamond crystal inclusions
Pinpoints

Pinpoints Very tiny diamond crystal inclusions Very tiny diamond crystal inclusions that are too small in size[…]

Pit Type of diamond blemish that appears as a tiny opening or indentation on the surface of a diamond.
Pit

Type of diamond blemish that appears as a tiny opening or indentation on the surface of a diamond.[…]

Pink Diamond

A pink diamond is a rare and highly sought-after coloured diamond that exhibits a natural pink body

Kimberlite

Kimberlite is an igneous rock, typically blue or green in colour, from which most diamonds are mined.[…]

Gem Quality

Only about 20% of mined diamonds are of gem quality, meaning they meet the necessary standards for[…]

Fancy-colour-Diamonds
Coloured Diamond

A coloured diamond is a diamond that exhibits a hue other than the traditional colourless range.

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[…]

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