A SIMPLE KEY FOR COLOR CENTER DIAMOND CRYSTAL UNVEILED

Some diamonds could also emit light for milliseconds to tens of seconds following the excitation is shut off—a phenomenon referred to as phosphorescence.Photoluminescence spectroscopy reveals that unstable defects are taken out by HPHT procedure of Variety IIa brown diamonds to decolorize them. In addition, the NV�?NV0 ratio will increase to >1