I would like to share my experiences with my new GoSpectro spectrophotometer.
Goylab https://www.goyalab.com/ developed a handheld spectropjotometer for the smartphone, I had been looking for a digital version to replace my handheld basic spectrometer. my first unit was lost by the French postal service but the second did finaly arrived. I have been researching using different light sources and gem holding techniques, using the spectrometer.
I have found that calibration is very important as with any spectrometer and the wavelengh will be different.
The software allows you to displainy one or more spectra for analysis which helps in identification of the gem in question.
My collection of gem stones is not very alsobig and I am still trying to identify quite a few of them. I use the Refractometer and the Presidium gem tester a dark field illuminator and my Leica stereo microscope.
I also purchased the Thunder optics spectrophotometer which I did show previously but that unit requires a desktop computer and is not portable.
Calibration is done with a Flourescent bulb but can be done with other light sources.
The spectrometer is attached to the smartphone using one of the adapters to fit the camera lens and the light shone at the spectrometer calibration is then performed, a gem or rough is attached to the tube with plastacine or bluetak or similar I prefer glue dots to hold the gems.
My light source is the Amscope LED spotlight which may not be the best source for spectrometry but I am still researching.
With my limited knowledge I have been trying to identify a purchase of mixed gems purchased online.
![known synthetic ruby vs rough stone|243x500]
I have been interested in using lasers to excite gems.
I hope this has been of interest if anyone is interested I will continue the review.