Assertion: nimrud lens | /r/HasProperty | a rock crystal artifact
Facets:
Source sentences:
text: The so-called Nimrud lens is a rock crystal artifact dated to the 7th century BC which may or may not have been used as a magnifying glass, or a burning glass.
text: The so-called Nimrud lens is a rock crystal artifact dated to the 7th century BC which may or may not have been used as a magnifying glass, or a burning glass.