Ear Stretching Spiral. Wood Tribal Spiral. Available in 3mm - 10mm (US 8g - 3/8”). Made from smooth polished wood. Organic ear stretching spirals are breathable and comfortable to wear. For more info about Organic Body Jewellery please read our materials guide. For use in stretched piercings such as the Stretched Earlobe. For help with sizing please read our sizing guide. Unusual spiral earring for Ear Stretching.