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Diamond Specialist

Diamond Specialist

4 C’s of Diamonds Specialist

Alex Brothers jewellers is since 1950’s Diamond Specialist. A wide range of christening crosses and religious medals. Diamond Engagement rings, Rings and Wedding rings.

What makes Diamonds so Exquisite

Diamonds specialists have a long history as beautiful objects of desire. Flourishing from carbon atoms, diamonds are created after being placed under high temperature and pressure conditions. This formation only exists approximately 100 miles beneath the earth’s surface before being pushed upward to the earth’s surface for man to cleave, cut and polish.

“Diamond is the most valuable, not only of precious stones, but of all things in this world.”
– Roman Naturalist, Pliny (1st Century AD)

The 4 C’s for being a Diamond specialist

The well known Diamond Certification Standard was developed by the Gemological Institute of America (GIA) and includes the 4 C’s of colour, clarity, cut and carat. Together these criteria determine the quality of the diamond and its overall value. 

Professionals rate the four-diamond qualities consistently, providing you with a tool to analyze diamonds. You can better identify if a diamond is high-quality by looking at its 4Cs.

The Diamond 4Cs meant two things: diamond quality could now be conveyed in a global language, and diamond consumers could now understand precisely what they were about to buy.

GIA is a global authority and the world’s trusted source for an independent evaluation, having created the Diamond 4Cs and the International Diamond Grading SystemTM. Diamonds specialists know these 4c’s facts.

Diamon Speclist


Colour is essential when determining the quality of the diamond. It is evaluated on a scale ranging from D (diamond of exceptional whiteness) to Z (a diamond that is ‘tinted’ white yet reflects yellow in colour). The whiter the diamond, the rarer it is.

It is essential to look at diamonds individually because each diamond provides a different grade depending upon the colour. Depending on the diamond’s cut, carat weight, and shape, diamonds’ colour might appear different.

The grade of a diamond is generally reflected in its price, which can be substantial. The naked eye cannot usually see the difference between two nearby colour graded diamonds, even if the price difference is significant.

These variations make a significant difference in diamond quality and price. Depending on the hue and intensity, a stone’s colour can either diminish or enhance its value.


Clarity is defined by the number, size, nature and position of the inclusions (internal and external imperfections). A diamond is considered to have the highest level of clarity if no faults appear under a 10x loupe. Whilst almost all diamonds contain impurities, a perfectly pure diamond is possible but extremely rare. A Diamond’s Clarity grade evaluates how clean a diamond is from both inclusions and blemishes. The GIA grades clarity on the following diamond clarity chart:

  • Flawless (FL) No inclusions and no blemishes visible under 10x magnification
  • Internally Flawless (IF) No inclusions visible under 10x magnification
  • Very, Very Slightly Included (VVS1 and VVS2) Inclusions so slight they are difficult for a skilled grader to see under 10x magnification.
  • Very Slightly Included (VS1 and VS2) Inclusions are observed with effort under 10x magnification but can be characterized as minor.
  • Slightly Included (SI1 and SI2) Inclusions are noticeable under 10x magnification.
  • Included (I1I2, and I3) Inclusions are obvious under 10x magnification, affecting transparency and brilliance.



The weight of a diamond is measured according to the standard unit used worldwide; the carat. One carat is equivalent to 0.2 grams. A diamond’s value varies according to its number of carats and its rarity. The heavier the uncut diamond, the rarer it is.

When all other factors are equal, the price of a diamond rises with its carat weight because bigger diamonds are rarer and more desired. However, depending on three other characteristics of the diamond 4Cs, two diamonds of similar carat weight might have vastly different values.


The cut is the most crucial of the Gemological Institute of America’s criteria(GIA). Not only does the cut influence the shape of the diamond, it also affects the life and brilliance of the diamond. A cut is evaluated on the precision of its critical angles, its symmetry, proportions and polish.

Proportions of a diamond refer to the relationship between the parts of the diamond;

-The table (top flat facet)

-The crown (visible top of the diamond)

-The girdle (the line or edge around the middle of the diamond)

-The pavilion (the underside)

This relationship affects the way the diamond interacts with light, revealing the sparkle and brilliance of the stone.

The proportions of those facets that determine the diamond’s face-up look are calculated by the GIA. These proportions allow the GIA to determine the ideal diamond cut by examining how well a diamond interacts with light to produce desirable aesthetic effects, such as:

  • Brightness: A diamond reflects both interior and exterior white light.
  • Fire: Fire is the dispersion of white light into all of the rainbow’s colours.
  • Scintillation: The quantity of sparkle a diamond emits, as well as the pattern of bright and dark regions generated by internal reflections.


Diamond Cut

“Better a diamond with a flaw, than a pebble without”

– Confucius

Overall, you should buy a diamond based on how it seems to the naked eye. That’s how the phrase goes… “don’t judge a book by its cover“, you shouldn’t judge a diamond by its certificate.

Next time you are purchasing a diamond for your loved one, consider the 4 essential C’s to ensure you receive a quality diamond without visiting a Diamond Specialist within your budget. Also, read our latest blog how to choose wedding rings?