History of Diamond Grading in Australia

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Name for the basic outline of a polished diamond
Shape

In the context of diamonds, shape refers to the basic outline or form of a polished diamond,[…]

Scintillation

Scintillation refers to the sparkle or twinkle that a diamond exhibits as light reflects off its surface[…]

Intensity and purity of colour in a diamond
Saturation

Saturation refers to the intensity and purity of colour within a diamond. It is a key factor[…]

Round Brilliant Cut Diamond cut or shaped into a circular outline or circumference
Round Brilliant Cut

The Round Brilliant Cut is by far the most popular and widely recognised diamond cut, known for[…]

Rough Diamond

A rough diamond is a diamond in its natural state, exactly as it is found deep within[…]

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.

The radiant cut is a diamond shape that combines the sparkle of a brilliant cut with the elegance of a square or rectangular shape.
Radiant Cut

The radiant cut is a diamond shape that combines the sparkle of a brilliant cut with the[…]

Relations between the dimensions and angles of a finished diamond.
Proportions

In the context of diamond grading, proportions refer to the relationship between the dimensions and angles of[…]

proportions on a round brilliant cut diamond
Proportion Grade

The proportion grade is a qualitative assessment of the overall proportions of a round brilliant cut diamond.

Diamond cut or shaped into a square or rectangle
Princess Cut

The princess cut is a popular diamond shape known for its sharp, square or rectangular outline and[…]

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