FOTO_20190925_194619
red beryl impregnated with polymers Read more
red beryl impregnated with polymers Read more
blue irradiated natural diamond Read more
light blue fluorescence in synthetic CVD colorless synthetic diamond Read more
yellowish green fluorescence in natural IaA diamond Read more
natural Type IIa diamond fluorescing blue due to N3 aggregate ... Read more
EXA fiber coaxial probe Read more
Impregnated emerald Read more
patchy color fluorescence in Multi-step treated pink natural diamond Read more
CVD colorless synthetic diamond reaction to the EXA source Read more