'Ivory' in the Bible

The king also made a great ivory throne and overlaid it with pure gold.

because the king had ships that sailed to Tarshish accompanied by Hiram's ships. Once every three years ships from Tarshish returned, bringing gold, silver, ivory, apes, and peacocks.

Now as to the rest of Ahab's accomplishments, everything that he undertook, the ivory palace he built, and the cities that he built, they are written in the Book of the Chronicles of the Kings of Israel, are they not?