Call yourself Sherlock and use one of these loupes to uncover the mysteries of the world that lies beyond what the normal eye can see. Loupes are used for discerning the grade of stones, stamp collecting, identifying compact electronic parts, inspecting tattoo artist needles, and biological field identification. With a loupe in hand instead of a magnifying glass, who needs the sidekick Watson? Solve this one yourself.

You can learn more about rockhounding in our "Learn and Explore!" Rocks, Minerals and Prospecting pages.