Vintage Tigers Eye from 1920's

My Grandad was given this ring when he ran liquor to prohibition towns in OH, TN, and KY as a thank you from a gangster who ran Speakeasies in the 20's. He was quite the black sheep until he settled down and raised my grandma's son (my dad) as his own son. He lost an arm after an accident driving a coworker home from the shipyard... never wore the ring again.