Strong’s Greek
G1661 — elephantinos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἐλεφάντινος
elephantinos — pronounced el-ef-an'-tee-nos
from elephas (an "elephant"); elephantine, i.e. (by implication) composed of ivory:--of ivory.
1 occurrence in the KJV.
Revelation 18:12
The merchandise of gold, and silver, and precious stones, and of pearls, and fine linen, and purple, and silk, and scarlet, and all thyine wood, and all manner vessels of ivory, and all manner vessels of most precious wood, and of brass, and iron, and marble,