You searched for: “fineness
fineness, finesse
fineness (FIGHN uhs) (noun)
1. Something which is superior in quality: Matilda had never before felt such fineness as this piece of silk fabric.
2. The proportion of pure gold or silver in an alloy: There is a high fineness of gold in this ring.
finesse (fi NES) (noun)
1. Skill, adroitness: Nelda handled the interview with the senator with finesse and cleverness.
2. Subtlety or tact in maneuvering; craftiness: Todd showed much shrewdness and finesse in dealing with the company executive.

The fineness of Leila's training was amply demonstrated by the finesse with which she managed the job interview after which she was offered a high-paying position in the law firm.