Some inclusions can’t be seen with the naked eye. Try putting your crystal under a microscope to see if you can spot any imperfections.
Squeeze the crystal between your palms. If it stays cool, it’s most likely real.
This test may not work if you have polished clear quartz, as a sharp edge is needed to scratch the glass. Consider purchasing a Mohs hardness test kit if you plan to test multiple crystals. [5] X Research source You can also try scratching the quartz on a steel or ceramic plate.
Clear quartz is made up of different additives and impurities, whereas glass or fake quartz is man-made with one material. [6] X Research source
Gas bubble inclusions are rarely perfectly round and are quite large, while manufactured air bubbles are symmetrically spherical and tiny.
A real clear quartz may discolor and become sooty when burned, but the soot will wipe right off once cooled—no permanent damage can be done to a real crystal.
Purchase a UV flashlight, so you can test your crystals anywhere.
