Before Rick handed his daughter over to Galen, he had a special ring to give to her that expressed his pride and gratefulness he had in his daughters life. Rick knowing that only God could of formed and molded his daughter, he gives God the glory and gives Carrie a ruby ring signifying the virtuous woman he saw in his daughter.
How very special as the ending of his responsibility finalizes and the time approaches to hand over his daughter, placing the responsibility in the hands of the new man in her life. The responsibility that had been his for 24 years.
What incredible grace God gives to every Father in that moment.