If you are reading this, most likely you asked me casually about a gemstone. What it is, what is the origin. Has the gemstone been treated? How much is it worth?
Knowing the identity of a gemstone requires proper tests such as checking the Reflective index (https://www.britannica.com/science/refractive-index), checking the absorption spectrum (https://www.merriam-webster.com/dictionary/absorption%20spectrum) if the gemstone / material is translucent or transparent.
On top of these tests, you would also need to go through some microscopic examination, polariscope, UV light, EDX (https://www.thermofisher.com/blog/microscopy/edx-analysis-with-sem-how-does-it-work/), FTIR (https://www.thermofisher.com/sg/en/home/industrial/spectroscopy-elemental-isotope-analysis/spectroscopy-elemental-isotope-analysis-learning-center/molecular-spectroscopy-information/ftir-information/ftir-basics.html).
One of the ways of determining origin of a gemstone, you need to analyze data acquired from the gemstone using RAMAN spectroscopy (https://www.bruker.com/en/products-and-solutions/infrared-and-raman/raman-spectrometers/what-is-raman-spectroscopy.html) and compare it to an existing accurate database.
Therefore, it is better send the item to the gemological laboratory. Also without proper testing of the gemstone / material, there is no basis to find out what it is worth.
If you accept this disclaimer, you agree to indemnify me, my family, my friends, my staff, my partners and my businesses all damages and/or consequences that may result from my opinion.