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Diamond Knowledge

The 4Cs

Every diamond is unique and has certain distinguishing characteristics. The 4Cs – Cut, Colour, Clarity, Carat Weight are the globally accepted standards for assessing the quality of a diamond and its sparkle.

When a diamond is certified, a record of a diamond’s grades in the 4Cs is produced, allowing prospective buyers to make an informed decision. Together, these criteria also determine the value, and often, the price of the diamond.

Diamond 4Cs Cut

Cut determines how a diamond’s facets interact with light.

Diamond 4Cs Clarity

Clarity is a measure of the purity and rarity of a diamond.

4Cs Diamond Color

Colour refers to the natural tint inherent in diamonds. 

4Cs Diamond Carat

Carat denotes the weight of a diamond, rather than it’s size.

Diamond 4Cs Singapore
Excellent Cut

An excellent cut diamond is a diamond that is cut to excellent proportions and angles that reflect back the maximum possible amount of light which enters it. It is among the rarest cuts, and is the benchmark for grading all other diamonds.

Diamond Fluorescence

Fluorescence refers to a diamond’s tendency to emit a soft colored glow when subjected to ultraviolet light. Strong fluorescence is one of the factors that may impact the price of a diamond.


Our diamonds at Love & Co. are certified by the De Beer Group’s Institute of Diamonds, bringing in professional experience and heritage of more than 120 years of experience in the industry.

Frequently Asked Questions​

Even though the carat weight is one of the most discussed topics for a diamond, out of the 4Cs (carat, colour, clarity, cut), the diamond’s cut is arguable the most important factor in determining its sparkle. For your diamond to return optimal light and brilliance, it would depend on the alignment of the shape, proportions, number of and angle of its facets.

The colour of the diamond is marked by a spectrum – from how coloured to clear the diamond is. The clearer a diamond is, the higher the quality of the stone you’re wearing! Bear in mind that this criterion is not used for distinctly coloured diamonds such as charming blue or pink diamonds. Whereas for white diamonds, observing a yellow tint is undesirable.

The first thing to look out for in a prized diamond is its certification. Leading diamond certifications include GIA (Gemological Institute of America), IGI (International Gemological Institute (IGI) and IOD (De Beers Group Institute of Diamonds). These are independent gemological bodies that produce unbiased reports of the quality of the diamond. Here at Love & Co. Singapore, we’ve established the first Asian strategic partnership with De Beers Group Institute of Diamonds, offering some of the most valued diamonds in Singapore.

If your diamond does not sparkle and instead appears cloudy, it’s best to make a trip to your jewellery store for a check! A cloudy appearance can stem from the grease or dirt which accumulates on the stone’s surface, and turns dull over time. To bring back its shine and brilliance, seek advice from your jeweller on how to care for your precious stone.

Engagement Rings

Explore Love & Co.’s curated range of diamond rings – brighter and more beautiful than others.

Engagement Rings

Explore Love & Co.’s curated range of diamond rings – brighter and more beautiful than others.

LVC Precieux Collection

Larger, fancier, and comes in a collection of colours. Discover the new generation of diamond engagement rings made only possible with science.

Made For You, By You

Our bespoke service allows you to build your ring from scratch. A visual and hands-on experience like no other.

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