There is no definitive answer to this question as it is ultimately up to the individual to decide which finger they want to wear their friendship ring on. However, there are a few things to consider that may help you make your decision.
The most popular finger to wear a friendship ring on is the ring finger of the left hand. This is because the ring finger is typically associated with relationships and love. Wearing your friendship ring on this finger is a way of symbolizing the strong bond you share with your friend.
Another option is to wear your friendship ring on the middle finger of either hand. This is a less common choice, but it can be seen as a way of making a statement about your friendship being equally important as any other relationship in your life.
Ultimately, it doesn't really matter which finger you choose to wear your friendship ring on. What's important is that you wear it with pride and show the world the special bond you share with your best friend!