On RapNet you can block specific RapNet members from seeing your diamond listings in their search results and block a specific member's diamonds from your diamond search results.
Here's how to do that:
Go Permissions > Blocking
Blocked Accounts: Stop specific members from seeing your diamonds in their search results:
Type in the first few characters of the RapNet ID, member name, or company name in the box.
Click Block
Search: Block specific member's diamonds from appearing in your search results:
Type in the first few characters of the RapNet ID, member name, or company name in the box.
Click Block