Deep Navel Jewelry Piercings. Many girls with navel piercings share a common problem. Their navel is just pierced too deep. For one reason or another the piercer pinched too much skin when piercing or there has been a slight weight gain. What ever the reason, we have the solution. Most navel jewelry on the market now is a 7/16" inch size but when you try to wear it it seems to sink inside your navel and doesn't look right. You constantly have to try to pull out your jewelry and it goes right back in. In addition to that, it's terribly uncomfortable. If you share this problem, you know what I mean. We have assembled a navel jewelry section just for you. All the jewelry on this page is made for a deep navel piercing.