Chalcedony - Vine's Expository Dictionary of New Testament Words

Chalcedony

[ 1,,G5472, chalkedon ]
the name of a gem, including several varities, one of which resembles a cornelian, is supposed to denote a green silicate of copper found in the mines near Chalcedon" (Swete, on the Apocalypse), Revelation 21:19.

Vine's Expository Dictionary of New Testament Words