By far the most utilised and requested gem for a jewel, it owes its name to the ancient Greek word “Adámas”, meaning invincible, indomitable, indestructible. The origin of its name reflects the extraordinary hardness of this material (the hardest on the face of the earth), which can only be scratched by another diamond. Precisely for this characteristic, the diamond has always been associated with the concept of eternity, and for this reason it is used to mark life’s most important occasions such as births, engagements, weddings, and anniversaries.
In 1953, the Gemological Institute of America (GIA) developed the first globally accepted standard to classify diamonds by evaluating four characteristics: COLOUR, CLARITY, CUT, and CARAT WEIGHT.
Today, the 4Cs of diamonds are the universal language for evaluating the quality of any diamond anywhere in the world.
A diamond is classified to determine its relative absence of colour based on a colour scale ranging from D (colourless) to Z (light yellow or brown).
GIA assigns a colour grade by comparing each diamond to a master set in a highly controlled lighting and observation environment.
Colour variation is a fundamental element of the diamond. Since the most common colour of diamonds in nature is light brown-yellow, the more colourless a diamond is, the higher its value and rarity. Although many diamonds may appear colourless to the untrained eye, many stones have a slight yellow or brown tint. Even the smallest shade of colour can significantly alter a diamond’s value.
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