Violan specimen from the first locality where this clinopyroxene variety was first described. It is a purple to purple-blue manganese-colored diopside, augite, or omphacite. This specimen we offer is accompanied by a Deyrolle (Paris) label, with the number #3606 (attached to the sample). The Deyrolle company began its business in 1831, led by Jean-Baptiste Deyrolle, with the production and sale of materials related to the natural sciences. This specimen is accompanied by a nice handwritten label.

The original name was "violan", introduced in 1838 by August Breithaupt. In 1867, Thomas Allison Readwin, in his Index to Mineralogy, misspelled the name with an "e" at the end, but it remained that way for the future.

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