Be a Smart Diamond Shopper

Selecting a diamond is a decision of a lifetime and the process starts with knowing the 4Cs of a diamond.

These 4Cs are the industry standard for determining the quality and value of a diamond, the 4Cs are Cut, Colour, Clarity and Carat Weight.

Our expects here at Mineral Trader Group have created an exclusive guide to help you understand 4Cs system. This is will help you become a smart Diamond Shopper that will help you choose a diamond to keep forever.


Sparke, Fire, Brilliance, these are some of the words used to describe the beauty of a diamond, and the Cut is what determines a stone's light performance or ultimate shine.

A diamond is at it most brilliant when it is cut to exact proportions and correct angles, not too deep or too shallow. Each facet reflects off another, releasing the diamond's brilliance and fire through the table or top of a diamond.

You may also hear words like polish and symmetry when referring to cut. Polish refers to how smooth the stone's facets are, while symmetry describes their alignment. A stone with poor polish or symmetry will appear lacklustre.

  • Ideal Proportions

    Ideal Proportions

    The Cut and the Polish is the most important of the 4Cs. When a diamond is cut to ideal proportions, light enters through the top of the diamond, reflects from one facet to another and exits toward your eye giving higher brilliance and fire resulting in greater beauty.

  • Cut Too Shallow

    Cut Too Shallow

    Well cut diamonds exhibit facets with the correct angles and perfect placement to maximize the diamonds brilliance. It is the quality of the cut and its final polish that unlocks the hidden beauty of diamonds.

  • Cut Too Deep

    Cut Too Deep

    If a diamond is cut to deep, then some light escapes through the opposite side of the pavilion, or bottom, of the diamond. This makes the diamond appear smaller and less brilliant.

Diamond Cut Grades:

  • Excellent

    An Excellent-cut diamond is Cut to the highest possible standard and optimum proportions. It is cut with exacting proportions and superior craftsmanship, and therefore reflects the ideal amount of sparkle, brilliance and fire. Exhibiting ideal beauty and intricate

  • Very Good

    A Very Good-cut diamond reflects practically as much sparkle, brilliance and fire as an Excellent Cut. The differences between Very Good and Excellent is virtually imperceptible, so a Very Good is an exceptional choice in cut - and is less expensive than Excellent.

  • Good

    A Good-cut diamond reflects a good deal of light and produces a good amount of sparkle, fire and brilliance. Less expensive than Excellent and Very Good.

  • Fair

    A Fair-cut diamond generates a decent amount of brilliance and fire, but will not appear to have as much sparkle compared to a diamond that is Excellent, Very Good or Good. Quite often, a diamond of Fair proportion is cut for carat weight and size, not beauty. When budgeting, you may consider a larger Fair-cut diamond, instead of a smaller diamond that is higher on the cut scale.

Expert Diamond Tips:

  • Cut is highly Influenced by the expertise of the Cutter, The Value of a Diamond is highly based on the Human Skill and Experience of Cutting.
  • When selecting a diamond, you should consider the highest cut grade that your budget allows. Always go for "Excellent Cut Grade".
  • Cut should not be confused with shape! Though diamonds may be shaped as round, pear, oval, cushion, asscher, emerald, princess, heart or marquis, it is the cut that determines sparkle, scintillation and fire.
  • You can tell if a diamond is cut too shallow by an overall dull appearance.
  • You can tell if a diamond is cut too deep from visibly dark areas where light has escaped.