# pitchstone

> dull black glassy volcanic rock

**Wikidata**: [Q1423205](https://www.wikidata.org/wiki/Q1423205)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Pitchstone)  
**Source**: https://4ort.xyz/entity/pitchstone


## References

1. Freebase Data Dumps. 2013