Tourmaline, esp. the black variety.
| 单词 | θ215595 | 
| 释义 | society > occupation and work > materials > raw material > gem or precious stone > tourmaline > 			[noun]		 > varieties of (5)		 schorla1773 Tourmaline, esp. the black variety. rubellite1794 A pinkish-red lithium-rich variety of tourmaline, often of gem quality. siberite1802 = rubellite, n. indicolite1808 An indigo-coloured variety of tourmaline. zeuxite1836 A green mineral later identified as a variety of tourmaline.  | 
	
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