Strong's G5472 · Greek

χαλκηδών

chalkedon · khal-kay-dohn'

from 5475 and perhaps 1491; copper-like, i.e. "chalcedony"

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 *† χαλκηδών , -όνος, ὁ chalcedony , "supposed to denote a green silicate of copper found in the mines near Chalcedon " (Swete): Re 21:19 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain