Every diamond is beautiful, and over time developing a standard grading system became necessary to determine the value. The 4C’s of diamond grading and quality is that standard that was set forth by the Geological Institute of America (GIA). The 4C’s include:

• Color – Color is graded from D to Z, with D being the best grade. Less color higher grade.
• Clarity – Clarity is based on the number of imperfections contained within the diamond — the more imperfections, the lower the value.
• Cut – The most valuable are round diamonds. Other diamond shapes are worth much less than round, such as cushions, princess cuts, and radiants.
• Carat Weight – This is the easiest valuation of the 4 C’s. As the weight or carat of a diamond increases, the value of the diamond increases accordingly.


As one of the 4C’s, Diamond Clarity is one of the significant factors in the grading of a diamond. Diamond clarity is defined as the assessment of any small imperfections on the surface and internally of the diamond. Any surface flaws discovered are labeled blemishes, whereas internal defects are labeled as inclusions. Very tiny, naturally occurring blemishes and inclusions are microscopic in size and do not affect the beauty of the diamond. The diamond clarity grade is indirectly proportional to the number of blemishes and inclusions. Specifically, the grade for clarity increases as the number of blemishes and inclusions decrease.


Flawless diamonds are real but very rare, with less than 1% of all diamonds being flawless. The flawless category means inclusions and blemishes are not visible under 10x magnification. Incredibly rare, flawless diamonds are nearly impossible to find with 100% free of inclusions.


Natural Diamonds are created under the earth’s surface under extreme pressure and temperature. Small inclusions and blemishes are inevitable. The internal characteristics of natural diamonds are what gives the diamond its character and individuality.

Inclusion Examples:

  • Clouds
  • Feathers
  • Crystals or minerals
  • Knots
  • Cavities
  • Cleavage
  • Internal graining

Blemish Examples:

  • Polish lines
  • Scratches
  • Nicks
  • Pits
  • Chips
  • Breaks
  • Dark or light spots

Teva Diamonds is the Diamond Expert. Teva Diamonds is focused on offering the very best diamonds on the market. Contact us today, and we can answer any questions you may have. (877)683-3426