The diamond has very excellent optical quality, with very high transmittivity and refractivity in most spectrums of the wave bands, and also the excellent thermal, chemical, mechanica1 properties.

• 天然金刚石具有十分优异的光学性能,它在大部分波段具有很高的透过率和折射率以及优异的热导性、化学惰性、力学性能等。