Loupe Info
A jeweler's loupe is a magnifiying tool used to see tiny inclusions in a diamond. The level of specification on a jeweler's loupe is usually 10x triplet, that is 10x magnification. Without the help of a loupe you cannot see most of the inclusions inside a diamond.
Using a loupe is a little tricky at first, but here are some quick tips: Which eye do you use when you investigate something very tiny? This is your primary eye. Hold the loupe to this eye and bring the diamond in close with your other arm/hand until it’s in focus. If you can see into the diamond itself, you have mastered the loupe!