# pietra dura

> artwork technique of creating works in which pieces of hard, polished stone of varying shapes are set into marble or another hard surface to form a pattern

**Wikidata**: [Q1044853](https://www.wikidata.org/wiki/Q1044853)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Pietra_dura)  
**Source**: https://4ort.xyz/entity/pietra-dura


## References

1. Integrated Authority File
2. SUDOC
3. Nuovo soggettario
4. Freebase Data Dumps. 2013
5. RAMEAU
6. [Registros de autoridad de "Materia" de la Biblioteca Nacional de España. Spain open data portal](https://www.bne.es/media/datosgob/catalogo-autoridades/materia/materia-UTF8.zip)
7. Faceted Application of Subject Terminology
8. National Library of Israel Names and Subjects Authority File