COLOR CENTER DIAMOND CRYSTAL FUNDAMENTALS EXPLAINED

Some diamonds could also emit light-weight for milliseconds to tens of seconds once the excitation is shut off—a phenomenon often known as phosphorescence.Photoluminescence spectroscopy reveals that unstable defects are eliminated by HPHT procedure of Type IIa brown diamonds to decolorize them. Moreover, the NV�?NV0 ratio improves to >1 in trea