Patent ID: 11906437
Assignee: UNIVERSITà DEGLI STUDI DI MILANO - BICOCCA
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. The apparatus of claim 1, wherein the central processing unit is further configured to, after establishing that the gem is a type II diamond:
deactivate the second light source and activate the first light source to emit the first primary beam toward the analysis position; and
acquire from the first photodetector device the distribution of spectral intensity as the function of emission wavelength and analyze the distribution of spectral intensity as the function of emission wavelength to determine a presence or absence of an intensity peak at a wavelength of approximately 738 nm;
if, as a result of this third analysis, the intensity peak at the wavelength of approximately 738 nm is determined to be present, establishing that the gem is a synthetic chemical vapor deposition (CVD) diamond and outputting an indication that the gem is a synthetic CVD diamond; and
if, as a result of the third analysis, the intensity peak at the wavelength of approximately 738 nm is determined to be absent, proceeding with:
analyzing the distribution of spectral intensity as the function of emission wavelength to determine a presence or absence of an intensity peak at a wavelength of approximately 884 nm; and
if, as a result of this fourth analysis, the intensity peak at the wavelength of approximately 884 nm is determined to be present, establishing that the gem is a synthetic high pressure, high temperature (HPHT) diamond and outputting an indication that the gem is a synthetic HPHT diamond.