“Wulfenite yellow, Anglesite clear/white Wulfenite crystal 0.3x0.4mm Wild M3 stereomicroscope, x1 plan objective (homemade photo axial objective holder), x10 photo ocular, x4 magnification changer. Photo and collection Pierre Houssin”

“Wulfenite yellow, Anglesite clear/white Wulfenite crystal 0.3x0.4mm Homemade photomacroscope, Zeiss Luminar 16mm objective, x10 photo eyepiece, tube length 260mm. Photo and collection Pierre Houssin”