The gauge of normal earrings can vary depending on the piercing location and the size of the ear. However, there are some standard sizes for different piercings. Most earlobe piercings are made with a 20G needle, as are some nose piercings. The most common gauge sizes for ear piercings are 20G (0.8mm), 18G (1mm), and 16G (1.2mm) . Standard earring sizes for the earlobe are usually 16G, 18G, 19G, and 20G. In general, the gauge at which youre pierced has to do with the piercing location and how that area heals. If you are unsure about the gauge of your earrings, it is best to visit your piercer and ask them what size they used for your specific piercing.