actually sacred items come to you in dreams when you have purified yourself almost to the point of not existing. it is these that some people carry in small leather pouches. they are seldom stones. and often consist of more then one item. the o.p. is a fine example of cultural misrepresentation. whether for purposes of humor or otherwise is unclear. not everyone will find it amusing. judging by the earliest responses, not everyone even finds it entirely comprehensible.
The stones chose me... One can become a Shaman thru heredity or the spirits can chose. The spirits are never wrong. Stones popping out of gravel crushers just doesn't happen. The one with the face remained hidden from the first 10 or 12 that viewed it. When my sister brought it out of the bush there it was. The third one came up in the family garden. The company I worked for went through a name change from Capital Cable to Shaw Cable making me a ShawMan