Assertion: germanium's luster | /r/HasProperty | metallic
Facets:
Source sentences:
text: Germanium is a hard, grayish-white element that has a metallic luster and the same crystal structure as diamond.
text: This form constitutes an allotrope known as α-germanium, which has a metallic luster and a diamond cubic crystal structure, the same as diamond.
text: This form constitutes an allotrope known as α-germanium, which has a metallic luster and a diamond cubic crystal structure, the same as diamond.