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The 4Cs of diamond

At RÊVER we create jewels for life, pieces that elevate any look without
understanding age or trends. All our fine jewelry is set with lab grown diamonds by the best local artisans.

We want to let you know all the features of this highly coveted gemstone
and give you the key tools when buying a diamond in order to choose your perfect stone.

Universally known as the 4Cs of diamond, Colour, Clarity, Cut and Carat Weight are the universal standards for evaluate the quality of any type of diamond. They are used to evaluate all diamonds, both those we use at RÊVER, created in a laboratory, and those extracted from the mines. Below, we explain more details about each


The colour evaluation of most gem-quality diamonds is based on the absence of
colour. A chemically pure and structurally perfect diamond has no hue and
consequently, a higher value. For this reason, the diamond colour-grading system
measures the degree of colourlessness by comparing a stone under controlled
lighting and precise viewing conditions to masterstones of established colour

Many of these diamond colour distinctions are so subtle that they are invisible to
the untrained eye; however, these distinctions make a very big difference in
diamond quality and price. 


To understand this concept, we need first know how diamonds are created. Lab
grown diamonds are the result of replicate the conditions that naturally exist between 140km and 190km below the surface with a unique combination of high
pressure (up to 60,000 ATM) and high temperature (up to 2,500º C). This process
can result in a variety of internal characteristics called ‘inclusions’ and external
characteristics called ‘blemishes’.
Evaluating diamond clarity involves determining the number, size, relief, nature,
and position of these characteristics, as well as how these affect the overall
appearance of the stone. If you are trying to determine what is the best clarity for a diamond, remember that no diamond is perfectly pure. But the closer it comes to purity, the better its clarity.


Diamonds are renowned for their ability to transmit light and sparkle so intensely.
We often think of a diamond’s cut as shape (round, heart, oval, marquise, pear), but what diamond cut actually does mean how well a diamond’s facets interact with light.
We want you to know that this is the most complex and technically difficult to
analyze. The cut is the only one of the 4C that determines the man and requires a
lot of artistry and workmanship to fashion a stone.

Carat weight

Diamond carat weight measures how much a diamond weighs. So, a metric “carat” is defined as 200 milligrams and each carat is subdivided into 100 points.

All else being equal, diamond price increases with diamond carat weight because
larger diamonds are rarer and more desirable. However, two diamonds of equal
carat weight can have very different values depending on three other factors of the diamond 4Cs: colour, clarity and cut.


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