Glossary: Gemstone Clarity

Clarity Term Meaning
FL = flawless no inclusions
EY = eye clean inclusion(s) visible only under 10X magnification
VSI = very slightly included tiny inclusion(s) well hidden or not readily visible
SI = slightly included hidden inclusion(s) not readily visible
VLI = very lightly included minor inclusion(s) barely discernible with the naked eye
LI = lightly included minor inclusion(s) that can be seen with the naked eye, but does not (do not) effect beauty or durability
MI = moderately included readily visible inclusions
HI = heavily included no clean areas, usually offered only in extremely rare materials