Assertion: α germanium | /r/HasAspect | metallic luster
Facets:
Source sentences:
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.