SKD Certificates

Diamonds Characteristics

The name “diamond” derives from the Greek word “Adamas” meaning unconquerable, suggesting the eternity of love.  Since ancient Greece, diamonds have been the traditional symbol of love and commitment. Diamonds are generally perceived to express not only love but flawless, timeless and astonishing beauty.

A diamond is the hardest of all gemstones found in nature. All diamonds are precious but no two stones are the same even though they may look identical to the naked eye. Those possessing the highest quality are the rarest and most valuable.

To understand these differences is to understand what is commonly known as the 4C’s: Cut, Clarity, Colour and Carat Weight which are used to classify the rarity of diamonds. Light is the element that ignites a diamond brilliance, fire and ultimate beauty. The combination will help to explain why one diamond can appear even more beautiful than another.

Cut

Cut is probably the most important and most challenging. It is the only characteristic influenced by man; the other three are dictated by nature. A well cut diamond causes the fiery sparkle. For a Round brilliant diamond, a good cut releases the “fire” and “brilliance” of a diamond through the proportions of its 57 or 58 facets ( tiny planes to create angles) allowing the maximum of light to be reflected through the diamond.

In order to maximise this fire and brilliance, a diamond cutter must place each of the stone’s facets and angles, which acts as light dispersing mirrors, in exact geometric relation to one another.

diamond cutsdiamond shape

Colour

Evaluating a diamond’s colour for grading purposes is done by measuring the degree to which a diamond approaches colourless. While most diamonds appear white, many of them display hints of colour barely discernible to the naked eye. The closer a diamond approaches colourless, the rarer and more valuable the stone.

DIAMOND COLOUR SCALE
D E F G H I J K L M N O P Q R S T U V W X Y Z
Colourless Near Colourless Faintly Yellow Very Light Yellow Light Yellow Yellow Light Fancy

Clarity

A diamond is formed by a crystallization of the element carbon under pressure. In most diamonds not all the carbon crystallizes, so small traces of non-crystallized carbon remain. These traces of remaining carbon are called “inclusions”. The degree to which a diamond is free from naturally occurring inclusions determines its clarity rating.

In most cases before these inclusions become apparent to the naked eye, they often require magnification under a powerful 10 x jeweller’s magnification lens, sometime referred as a “loupe”. The fewer and smaller the inclusions the rarer the stone and the more beautiful the brillance” resulting from the light passing through and out of the diamond.

DIAMOND CLARITY SCALE
FL IF VVS1 VVS2 VS1 VS2 S1 S2 I1 I3
Flawless -
Internally Flawless
Very Very Small
Inclusions
Very Small
Inclusions
Small
Inclusions
Inclusions Visible
to Naked Eye

Carat Weight

Diamond weight is stated in carats and therefore the size of a diamond. One carat is divided into 100 points; so for example, a diamond weighing 50 points is half a carat or 0.50 carats. Diamonds over 1 carat are particularly rare. It is estimated that less than 5% of gem quality diamonds achieve this magic weight once they are cut and polished making them more desirable and inevitably more expensive.