Strong’s Hebrew
H3539 — kadkod
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
כַּדְכֹּד
kadkod — pronounced kad-kobe
from the same as 3537 in the sense of striking fire from a metal forged; a sparkling gem, probably the ruby:--agate. see H03537
2 occurrences in the KJV.
Isaiah 54:12
And I will make thy windows of agates, and thy gates of carbuncles, and all thy borders of pleasant stones.
Ezekiel 27:16
Syria was thy merchant by reason of the multitude of the wares of thy making: they occupied in thy fairs with emeralds, purple, and broidered work, and fine linen, and coral, and agate.