When gold prospecting you need to read the rocks and minerals too. A hand lens or gold prospecting magnifier makes a great addition to your gold prospecting tool kit. Typically I like to have a 10x and 30-40x on hand when panning & sampling.
This topic came up during a recent gold prospecting hangout 😉
Gold Prospecting Magnifiers
the purpose of the magnifier (also called magnifier loupe) is to provide you with a critical view onto the crystal structure of both your gold and any rocks and minerals.
Higher magnification levels are needed to look at smaller minerals.
An example of these minerals would be the fine gold and black sands with hematite, magnetite, pyrite and garnet sands, etc.
Go to http://hunting4gold.com/gold/20-20-prospecting/ to get more info on gold prospecting training!