Sogdianite Visible Spectra (350 - 1000 nm)

The sogdianite absorption spectrum

• Vivid Purple 200310369; from the Wessels Mine in the Manganese fields in Hotazel, Northern Cape, South Africa., 3.28 mm thick sample. The color  of this material comes largely from manganese ions. Contributed data from Kaylan Khourie, Gemmology Department E.G.L., Johannesburg  South Africa. Data File: unpolarized

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