How to choose your own piercing jewelry?

For the first time, friends who come into contact with body piercing jewelry should consider several basic issues when choosing products:  

1. Where do I want my piercing ?

2. What line size should I wear?  

3. What inner diameter should I wear ?

4. What vacuum plating color should I choose ?

5. What material should I choose ? 

6. What color of gem should I choose ? 

Clear these points can quickly find their own needs of the product.