Magnification
One of the most amazing things about clarity characteristics is
how small they are. Most often, you need some sort of magnification
to see them at all. Most diamond professionals, industry organizations,
and government agencies agree that 10x magnification is the standard
for clarity grading. “10x” means that the item being
viewed is magnified ten times. It’s sometimes called 10-power.
Jeweler's Loup
Microscope
The two types of instruments used most frequently in the jewelry
industry are the loupe and the binocular microscope.
The loupe is the most convenient and affordable
magnifier used for diamond grading. It’s small and portable:
You can carry a loupe in your pocket. When used by someone with
an experienced eye, a loupe is very accurate.