Verses with the word rubies in the Old Testament (6 verses):

Job 28:18
No mention shall be made of coral, or of pearls: for the price of wisdom is above rubies.

Proverbs 3:15
She is more precious than rubies: and all the things thou canst desire are not to be compared unto her.

Proverbs 8:11
For wisdom is better than rubies; and all the things that may be desired are not to be compared to it.

Proverbs 20:15
There is gold, and a multitude of rubies: but the lips of knowledge are a precious jewel.

Proverbs 31:10
Who can find a virtuous woman? for her price is far above rubies.

Lamentations 4:7
Her Nazarites were purer than snow, they were whiter than milk, they were more ruddy in body than rubies, their polishing was of sapphire: