Assertion: apatite's luster | /r/HasProperty | vitreous
Facets:
Source sentences:
text: When cut and polished, apatite has a vitreous luster.
text: The luster of apatite is vitreous and the R.I. is variable, with the low index ranging from 1.630 to 1.645 and the high index varying from 1.632 to 1.651.
text: Its cleavage is incomplete; its luster is vitreous and resinous; its hardness on the mineralogical scale is 5; and its density ranges from 3,160 to 3,200 kg/m3 but reaches 3,800–4,200 kg/m3 in varieties enriched with strontium and the rare earths.
text: Cat's Eye Apatite Clarity and Luster Cat's eye apatite has a vitreous luster.