Study on Structure and Luminous Mechanism of Artificial Luminous Gem——“Qinglong Luminous Gem” for Example

Based on the matrix of alkali-earth-boroaluminate, the luminous gem with the special crystal structure is artificially manufactured, doped with activator of rare earth element Eu and assistant-activator in a proper amount.The artificial luminous gem could glow for 60 to 70 hours continuously when it absorbs some light.It is named as "Qinglong artificially synthesized luminous gem" (short for "Qinglong luminous gem"), which was acquired the Chinese invention patent in 2003.The manafacturing method of the gem and its gemmological characteristics are described briefly and the crystal structure is studied.The luminous mechanism of "Qinglong luminous gem" is also discussed. In order to eliminate the worry about its radioactivity for people, safety-radioactivity examination is performed.