A precious stone having the colour of sea water.
| 单词 | θ215709 | 
| 释义 | society > occupation and work > materials > raw material > gem or precious stone > less identifiable gems > 			[noun]		 > blue stone (2)		 ewage1377 A precious stone having the colour of sea water. tanzanite1968 A highly pleochroic violet-blue gemstone that is a variety of zoisite in which some of the aluminium is replaced by vanadium. | 
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