From http://www.fabianoefner.com/64838/556924/projects/millefiori whose work is absolutely amazing.
This is an old gas torch that was in our 110 year old house when we bought it. This was using a Canon Powershot whose model number I can never remember (look up the EXIF on the image?) in super macro mode. Was outside and quite dark so lit using the ‘Colour Flashlight’ app for Android, with camera set to 2” exposure. Moved the phone around a bit to get a nice even orange glow. Did some additional sharpening on the rust in post. Quite like this one.