Lexical Definition

‎כַּדְכֹּד‎ kadkôd (kad-kode') ruby H:N-M
from the same as ‎כַּד‎ in the sense of striking fire from a metal forged

agate.

1) a precious stone (maybe ruby, agate)

See Greek: ἴασπις

Usage: 3 forms in 3 verses
Form Translated As     In Verse(s)
כַּֽדְכֹד֙ ruby Isa.54.12
וְכַדְכֹּ֔ד and ruby Ezek.27.16
Κοδχόδ Chohor LXX.Ezek.27.16

Brown-Driver-Briggs

‎כַּדְכֹּד‎ noun [masculine] a precious stone, perhaps ruby (from sparkle ?; Aramaic || is ‎כַּדְכְּדָנָא‎); ‎׳‎‎כ‎ Ezek 27:16 as article of commerce; ‎כַּדְכֹֿד‎ Isa 54:12 figurative in promise to Zion. ‎כְּדֵי‎ see ‎דַּי‎.

Brown-Driver-Briggs References

Book Refs
Isaiah 54:12
Ezekiel 27:16