It's possible that:
* It's a nickname: Some people may call certain stones "wolfstone" due to their appearance, color, or perceived properties. For example, it might be a name for a specific type of granite, quartz, or even a meteorite that has a wolf-like pattern.
* It's a made-up name: Some people may use the term "wolfstone" for a stone they believe has special mystical or magical properties.
If you are interested in a specific stone you saw called "wolfstone," please describe its appearance, where you saw it, and any other details you can remember. This will help me identify the stone and provide you with more information.
