Hello, inclusion agate is quite rare (except in water bile agate), but at present, the counterfeiting technology is quite superb. Please be careful. Infrared spectrum analyzer may not be able to detect the substance in agate. It is suggested that you take your collected inclusion agate to the Geological University for consultation with experts (or the Gemstone Identification and Inspection Center affiliated to the Geological Exploration Team and the Ministry of Land and Resources) and ask experts to check it for you. I hope you get what you want. (Personal opinion only, for reference only)