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Choosing a Diamond - The 4 C's of Diamonds

The Village Goldsmith is committed to using diamonds sourced directly from trusted and reputable global diamond suppliers. We can guarantee that these suppliers are not involved in funding conflict in compliance with United Nations Resolutions, and that the diamonds they supply are conflict free.

We provide diamonds and diamond rings with certificates from some of the world’s most reliable and reputable diamond institutions, including the Gemological Institute of America (GIA) and the American Gem Society (AGS)

When understanding the quality of a diamond people commonly refer to the 4 C's. The 4 C’s stand for: Cut, Colour, Clarity and Carat Weight. The 4 C's provide a very good starting point, but further analysis is required in order to find a truly beautiful diamond. If you limit it to the 4 C's, then it would be like referring to your partner by their height and hair colour. There’s more to them than that! Even if two diamonds are the same on paper they can look completely different. 

The beauty of diamonds is that no two are the same and thus it is important to have experienced diamond buyers when selecting diamonds. In most cases our buyers would only purchase 10% of diamonds actually viewed. 

Diamond Selection

Diamond Cut 

The Cut refers to the proportions and finish of a diamond and is an important factor in the diamonds appearance. The importance of cut is often overlooked in many diamond guides but is a key element when ascertaining an overall diamond grade. A well-cut diamond will increase its brilliance, sparkle and appeal to the eye. A poor cut can make a diamond look dull, glassy and lack fire.  

An experienced diamond cutter will ensure that the diamond is cut to exacting proportions. In many cases this will mean that the stone's size (carat weight) will need to be sacrificed to ensure maximum brilliance, dispersion and scintillation (sparkle). A perfectly cut diamond will ensure that as light enters and exits a diamond, it reflects from each mirror-like face to another and back up through the top. It will sparkle and radiate in all lights. 

To ensure you get the ‘wow’ factor we only use diamonds with an Excellent and Very Good cut grade. 

Diamond Carat 

The weight of the diamond is expressed in carats. 1 carat equals 0.2 grams. This is further broken down into points, one carat equals 100 points. Diamonds are expressed as points or to two decimal places. Therefore, a half carat stone will be expressed as 50 points or 0.50ct. It is always important to look at a diamond's cut, colour and clarity when buying diamonds to determine whether it is a good stone. 

Diamond Colour 

The less colour in a diamond, the rarer it is. Colour is measured in alphabetical order beginning with D and descending to Z, where more colour is present.  

Fancy coloured diamonds are an exception to the rule because they are extremely rare. For example, a one carat pink coloured diamond could sell for 5 to 15 times more than a D coloured diamond of the same size and quality. 

Diamond Clarity 

All diamonds contain imperfections, most of which are too small to be seen by the unaided eye. The fewer noticeable flaws, the higher the value. Clarity is the extent to which the stone is free from external marks (blemishes) or internal features called inclusions. Diamonds that have no inclusions are called Flawless (FL) or Internally Flawless (IF). Clarity grades are determined through a 10x magnification and in general the size and number of inclusions within a diamond will determine the clarity grade. 

Beyond the 4 C’s 

The 4 C’s are our starting point when finding you the best quality grade diamond. Other factors that our diamond buyers look at include: 

  • Fluorescence 
  • Luster 
  • Shade 
  • Type of inclusions 
  • Placement of inclusions 
  • Whether the diamond is ‘eye clean’ 


It’s important that when you are comparing diamonds, you are comparing like for like. Make sure to ask for information about all quality factors before choosing your diamond. 

Diamond Certification 

All of our diamonds are supplied with a diamond certificate of quality from The Village Goldsmith and certification from an independent diamond grading laboratory available upon request or as specified. Each diamond certificate includes details of the diamonds size, colour, and clarity.  

Our diamond certificates are provided by the Gemological Institute of America (GIA) and the American Gem Society (AGS).