Navel shapes and what jewelry "studio 316L" recommends for initial piercing.
Every navel is different, but we will talk about some "Navel shapes". Do not let anyone tell you that you have to get pierced with 1 type of jewelry.a)From the shapes of the jewelry b)quality of the metal c)Internally or externally threaded jewelry, should be explained to you by the shop/studio. If the shop/studio can not explain or does not have (A,B,C mentioned above)for initial piercing. Run away, keep searching for a better place.
1.Navel Type: Not quite an outey as you can see the area just above the main hollow has a lip, the piercing would be no problem with little chance of it growing out. The navel piercing should be done with a curved belly bar as the area is very flat, a ring would sit to one side throwing the piercing crooked after a few weeks. jewellery: An ideal piece for this navel piercing would be something flattish to stop the belly bar rocking from left to right giving it lateral stability. Healing estimate: This navel is very open allowing for good air circulation, it is also higher than the belt line. With regular light cleaning and sensible jewellery the belly piercing should settle within 6/8 weeks and be completely healed inside 6 months (this is assuming the person leads a healthy lifestyle).

2.Navel Type:This thin oval shape navel is suitable for piercing with either a belly ring or a curved belly bar with a 5mm ball or gemstone. A bigger ball or navel seating would hamper the healing as the ball would be rubbing on the left and right side of the navel and add forward pressure making it more likely to grow out. jewellery: An ideal piece for this navel would be any of ball closure rings size 10mm or 11mm. If I was to use a curved navel bar, the open oval, mini or a small 5mm solitaire or double gem could be used. After healing any of the belly droppers would also suit. For piercing, the body jewellery (if using a curved belly bar) would have to be slightly more curved than normal to take away any pressure so that it does not grow out. Healing estimate: This navel is not very deep. Using the correct navel jewellery it should have reasonable air circulation, it is also higher than the belt line. With regular light cleaning and sensible piercing jewellery it should settle within 6/8 weeks and be completely healed inside 8 months (this is assuming the person leads a healthy lifestyle)
3.Navel type: This navel is a classic outey - not really suitable for piercing at the top. There is more room and a small lip of skin at the bottom of the navel. I would recommend the navel piercing to be done at the bottom "a downey". However this is still not ideal but by using a small belly ring or small navel bar could be possible. There are cases were this navel shape can not be pierced. jewellery: This is (not a pretty navel) and desperately need hiding. Once healed I would recommend shields as this has a flat and is big enough to hide it. The shield would cover the navel with the ball being underneath at the bottom. Healing estimate: This navel is open offering good circulation of air. It should heal up quickly settling in approx 6/8 weeks. It should be completely healed inside 6/8 months (this is assuming the person leads a healthy lifestyle).
4.Navel type: This navel is probably one of the most common shapes and ideal for piercing with a wide range of jewellery. It is not too deep and quite open. The only thing I would be concerned about is putting in something too heavy. The flesh above the navel looks quite soft with not much strength so putting in something that weighed more than 5 grams could stretch the skin downwards. I would recommend a curved belly bar rather than a belly ring. jewellery: We have more than 1000 designs for this type of navel. Healing estimate: This navel is normal, using suitable jewellery it should settle within 6/8 weeks. It should be completely healed inside 5/6 months (this is assuming the person leads a healthy lifestyle).
5.Navel type: Half moon with a smooth drop down from the navel. This is probably the most versatile of navels and very common. It is nice belly to pierce and will heal well as the air circulation around the piercing is good as there is no hollow for bacteria to hide in. jewellery: Big range of design at store. Healing estimate: This navel is normal, using suitable body jewellery it should settle within 6/8 weeks. It should be completely healed inside 5/6 months (this is assuming the person leads a healthy lifestyle).