Patent ID: 8778463

Claim:
A method of manufacturing a color-controlled sapphire, comprising steps of: (1) vaporizing chromium through sputtering or heating; (2) irradiating the vaporized chromium with electron beams or high-frequency waves to form the vaporized chromium into a plasma state having chromium ions formed from the vaporized chromium; (3) extracting the chromium ions from the plasma; (4) accelerating the chromium ions; (5) implanting the chromium ions into a sapphire; (6) heat-treating the sapphire implanted with the chromium ions at a temperature of 900˜1400° C. for 2˜36 hours in an oxygen atmosphere or in air; and (7) cooling the sapphire, wherein, in the step of implanting, energy of the chromium ions to be implanted is 50 keV˜1000 keV, and the chromium ions are implanted into the sapphire in an amount of 1×10 15 ˜5×10 17 ions/cm 2 , and wherein a color imparted by implantation of the chromium ions in the sapphire is stable following heat-treating at 900˜1400° C. for 2˜36 hours.