No specific ring finger traditionally signifies asexuality.
While there isn't a specific ring finger designated to represent asexuality, the middle finger is sometimes associated with it. Individuals on the asexual spectrum may choose to wear a black ring on their middle finger as a subtle symbol of their identity and a way to connect with others who identify similarly. However, this is a personal choice and not a universally recognized symbol. There's no ring finger directly associated with asexuality in this way.
It's crucial to remember that symbolism related to sexual orientation and identity is fluid and can vary between individuals and communities.