Originally Posted by alias

Let's go through this question:

"Is it illegal doing legal business with dealers?" Ask Rico.

"if you have no exact knowledge, but it's pretty obvious" If you know, you have knowledge.

"and you sell them things like rings or cars... then is that illegal?" This depends upon the source of the rings and cars and your status as a business. If you are a ring or car establishment it is not likely to be illegal. Pretend for a second you are instead a meth junkie, in this case it is quite likely the goods are stolen and you are breaking more than one law.