# touchstone

> small tablet of dark stone used for assaying precious metal alloys

**Wikidata**: [Q1482030](https://www.wikidata.org/wiki/Q1482030)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Touchstone_(assaying_tool))  
**Source**: https://4ort.xyz/entity/touchstone


## References

1. Freebase Data Dumps. 2013