Both Uses
obsidian
in
The Lightning Thief
(Auto-generated)
- Looming on the horizon was a palace of glittering black obsidian.†
Chpt 19 *
- We all collapsed, exhausted, on the obsidian gravel.†
Chpt 19
Definitions:
-
(1)
(obsidian) a black or dark-colored volcanic glass rock; one of the finest raw materials for the chipping of stone tools
- (2) (meaning too rare to warrant focus)