Assertion: vitreous enamel | /r/HasProperty | ground to fine powders
Facets:
value: in an agate or porcelain mortar
type: LOCATION
value: in pestle
type: LOCATION
Source sentences:
text: Vitreous enamels in the different colors are ground to fine powders in an agate or porcelain mortar and pestle, then washed to remove the impurities that would discolor the fired enamel.
text: Vitreous enamels in the different colors are ground to fine powders in an agate or porcelain mortar and pestle, then washed to remove the impurities that would discolor the fired enamel.