In cultured pearls, a mother-of-pearl bead or a piece of tissue is inserted (by man) into the mollusk to start the process. For both, the quality of the nacre dictates the quality of the luster, or shine of the pearl, which is very important to its beauty and its value.
For an airplane pilot, education takes many forms, including applied instruction, a high school diploma, an associate's or bachelor's degree, and specialized training. The Federal Aviation Administration also requires pilots to accumulate a lot of real-world knowledge in the form of flight-hours.
Those who are seeking a career as a professional pilot typically get their licenses and ratings in the following order: 1  Student Pilot Certificate. 2  Private Pilot License. 3  Instrument Rating. 4  Commercial Pilot License. 5  Multi-Engine Rating. 6  Airline Transport Pilot Certificate.