Let's talk Diamonds

If you are planning to purchase a diamond, it is good to familiarise yourself with the following jargon. Any dealer/jeweller will need the following information to assist you with selecting the perfect stone.


A diamond's shape is not one of the four characteristics (colour, clarity, cut & carat) by which its value is determined. Shape and cut are terms which are often used interchangeably however, a diamond's shape should not be confused with its cut which relates to the facet pattern of the diamond whereas the shape refers to its actual physical shape.

Below are 10 of the most popular shapes of diamond in modern jewellery today.


Understanding the 4Cs of Diamonds

When you talk diamonds, the 4Cs are always used to describe their characteristics. Each of the Cs is evaluated for quality and is graded on a scale.  


Diamonds are measured by weight, the term used to describe this weight is carat and it is abbreviated to ct. The larger the diamond, the rarer and more valuable it becomes. 


Diamonds come in various colours but most diamonds found in jewellery stores run from colourless to near-colourless, with slight hints of yellow. The industry standard scale for measuring colour begins with the letter D, representing colourless, and continues with increasing presence of colour to the letter Z. Colour is a natural element in diamonds. The more yellow the tint of colour, the less the sparkle of the diamond because light performance/reflection is reduced.


Diamond clarity refers to the absence of inclusions and blemishes. Diamonds without inclusions are rare and this affects a diamond’s value. The International Diamond Grading System grades clarity from internally flawless (FL) to obvious inclusions (I3).


Diamond cut refers to the precision of angles, proportions and symmetry, which directly impact brilliance, fire and scintillation. According to the GIA diamond cut grades on the scale of Excellent, Very Good, Good, Fair and Poor. The cut is the biggest indicator of the beauty of the stone.