Assertion: tourmaline's color | /r/HasProperty | rich
Facets:
Source sentences:
text: However, the Paraiba tourmaline owes its rich color to copper.
text: However, the Paraiba tourmaline owes its rich color to copper.
text: In addition to their brilliant and rich color, pink tourmalines are also naturally incredibly brilliant, exhibiting a gleam and shine that certainly catches the eye.