Diamond Clarity
CLARITY
The clarity of diamonds is classified by special codes which range from FL (flawless) at the upper to I3 (Included 3) on the low end.
FL/IF
FL: flawless indicates that ‘there are no internal or external flaws'.
IF: internally flawless simply means that ‘there are no internal flaws'.
Pricy. These diamonds are both rare and expensive due to their high-quality.
VVS1/VVS2
very, very slightly included means that it is very difficult to see inclusions even if you magnify the diamond by a factor of 10.
Although not perfect, these diamonds still represent the upper quality end.
VS1/VS2
Very slightly included: it is difficult to see inclusions unless you're an expert in gemology and know where to look for them.
SI1, SI2
This abbreviation stands for slightly included. More simply stated this means that inclusions are invisible under 10 times magnification and may be visible without it.
If you are on a tight budget, these stones represent good value.
I1, I2, I3
Included.