| 单词 | rainbow chalcedony | 
| 释义 | > as lemmasrainbow chalcedony ΚΠ 1865    D. Page Handbk. Geol. Terms 		(ed. 2)	 382  				Rainbow Chalcedony, a variety of chalcedony consisting of thin concentric layers, which when cut across exhibit an iridescence resembling the colours of the rainbow. < as lemmas | 
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