When discussing a diamond's clarity, we are referring to tiny, usually microscopic/imperfections developed as the stone forms in nature. A diamond with fewer imperfections or flaws is rarer and hence, more valuable. The most commonly accepted grading scale is the GIA Clarity Grading Scale. The clarity grade is based on what can be seen when the diamond is examined using 10x magnification, as provided by a jeweler's loupe. It ranges from a grade of FL/IF (flawless/internally flawless), to I3 (a high degree of inclusions or imperfections). A flawless and colorless diamond is extremely rare and priced proportionately much higher than any other grade.
The Lannyte® Company's Simulated Diamond would receive a grading of IF on the clarity scale, simulating the finest clarity diamonds available.