Most conch piercings are done at 14 gauge, but it is also possible to have a 16 gauge conch. According to another source, recommended sizes for conch piercing jewelry are 16g (1.2mm) gauge, 6mm-8mm bar length for labret/barbell, and 10mm-14mm inner diameter for hoops. Another source suggests that conch rings typically measure between 10mm and 12mm in diameter, but can sometimes reach 14mm. For a snug fit, those with smaller ears or conchs pierced nearer the edge of their ears may require a 10mm. A Reddit thread mentions that a piercers standard for conch piercing was 12g, but the shop manager and master piercer allowed the customer to pick between a 12g or a 14g. Infinite Body Piercing recommends starting with a straight post, at least 14 gauge thick, and rings are not usually suited for conch piercings.