However, Tyrion's being able to reach the standard of an F grade Chemist on his first day of refining, was considered a miracle, especially because he was still just a beginner! If news spread that a Chemist apprentice had managed to achieve such a success rate on his first day, it would surely put countless geniuses to shame.
Drone Chace Field became an F grade Chemist at the age of 15, making him the youngest ever recorded by the Pharmacists Guild. He was hailed as the most talented Chemist in the history of evolution. At that time, Chace had studied pharmaceutics for three years before becoming an F grade pharmacist. But, Tyrion had only studied for a single day!