Diamond Clarity

While cut determines the diamond’s sparkle, clarity gives the diamond its identity. 

Diamond clarity refers to the nature, color, number, and size of inclusions or blemishes found either on the diamond surface (external) or within the diamond (internal).

When inclusions are present in small numbers, they can add character to each diamond.  When inclusions are in excess, they spoil the diamonds clarity and value.


The more imperfections there are in a diamond, the less its monetary value.

Two main factors cause blemishes in a diamond.  Natural flaws inherent in the stone (internal) and those caused during the cutting process (external).  
External Flaws or “Blemishes”:
  • Polish lines
  • Scratches
  • Nicks
  • Pits
  • Chips


Some blemishes are so small that they are virtually undetectable.


Internal Flaws or “Inclusions”:
  • Feathers
  • Cracks
  • Clouds
  • naturals
  • Needles
  • Crystal/mineral inclusions
  • Knots
  • Grain lines

Some inclusions are almost imperceptible in a diamond while others are obvious.


How do these flaws influence a diamond’s value?

The Gemological Institute of America or GIA has established an internationally recognized system, extending from Flawless to Imperfect, as follows:


Clarity is not as important in regards to fancy color diamonds in comparison to white diamonds. Rarity of the color and its intensity are the most important factors to the process of selecting a FCD.  Also important to know that some colors are so rare (like red, blue, purple…), that clarity is even less important factor.