The Zirconias Nero Hoop Piercing Gold is part of the of Kalk’s Essentials Collection. There are jewels that should never be missing in a woman's jewellery box. The Essentials collection includes all those models of pendants, bracelets, rings, earrings and piercings, perfect for an everyday use. Or for all those willing to give a chic touch to their look natural and simple way. Perfect for those days when the most basic, turns out to be the most trendy.