Assertion: obsidian | /r/HasProperty | notable
Facets:
value: because of its internal purity
type: CAUSE
Source sentences:
text: Obsidian from Pachuca is notable because of its unique green-gold color and its internal purity which makes it one of the highest quality obsidian sources in Mesoamerica.
text: Obsidian from Pachuca is notable because of its unique green-gold color and its internal purity which makes it one of the highest quality obsidian sources in Mesoamerica.