Gypsum
Nearly transparent in oils used as an extender, filler or adulterant
Manufacturer / product code: Kremer / 58300
Chemical description: selenite, natural gypsum, hydrated calcium sulfate. Kremer PDF
Color: white
Color Index: PW25
Raman Spectroscopy 532 nm – ElviRa Spectrometer for Art
Raman Spectroscopy 532 nm (ElviRa spectrometer) Pigments-Checker Database

Raman spectroscopy 785 nm
Pigments (powder, no binder)

Raman Spectroscopy 785 nm Pigments (pure, no binder)
Pigments with acrylic binder (Pigments Checker)

Raman Spectroscopy 785 nm Pigments-Checker Database
Pure pigments (no binder, just powder)
DOWNLOAD paper: “Pigments Checker version 3.0, a handy set for conservation scientists: A free online Raman spectra database”

Raman spectroscopy 1064 nm
Pigments (powder, no binder)

Raman Spectroscopy 1064 nm Pigments-Checker Database
XRF spectroscopy
XRF Spectroscopy Pigments-Checker Database

DOWNLOAD previous Database Pigments Checker V.3 DOWNLOAD paper: R. Larsen, N. Coluzzi, A. Cosentino “Free XRF Spectroscopy database of Pigments Checker” Intl Journal of Conservation Science.
Reflectance Spectroscopy (200-1000 nm) – GorgiasUV Spectrometer
Reflectance Spectroscopy (200-1000 nm) (GorgiasUV) Pigments-Checker Database

Reflectance spectroscopy – Gorgias Spectrometer for Art
Reflectance Spectroscopy (350-950 nm) (Gorgias) Pigments-Checker Database

NIR Reflectance spectroscopy
NIR-Reflectance Spectroscopy (930-1690 nm) Pigments-Checker Database

FT-IR Spectroscopy (Non-invasive Diffuse Reflectance Probe)

FTIR Diffuse Reflectance Spectroscopy Pigments-Checker Database
FTIR non-invasive Spectroscopy Pigments (pure, no binder) Database