Sugilite spectra

Sugilite Spectra (350 - 1100 nm)

The origin of pink color in sugilite is it's managanese (Mn³⁺). Larger pieces are often purple, but when polished thin and examined in the regions that are pure sugilite, they are pink.

Images of a representative sugilite spectra

deep violet sugilite spectrum; Wessels Mine, South Africa. Reflectance from a large lump. Data File;
transluscent pink sugilite spectrum; Wessels Mine, South Africa. Transmission mode through a 1.396 mm thick polycrystalline slab. Data File:
turbid purple sugilite spectrum; Wessels Mine, South Africa. Transmission mode through a 1.48 mm thick polycrystalline slab. Data File:

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last updated: 26-Feb-2009