Color: rot, blau, hellblau, grünlich, gelb, lila, grau
Streak color: weiß
Lustre: Glasglanz, Diamantglanz, Perlglanz
Diaphaneity (Transparency): durchscheinend bis transparent
Fracture: uneben, muschelig
Tenacity: spröde References: Vilelmini Karantoni, Stefanos Karampelas, Panagiotis Voudouris, Vasilios Melfos, Lambrini Papadopoulou, Triantafyllos Soldatos, Constantinos Mavrogonatos: Spectroscopy and Microscopy of Corundum from Primary Deposits Found in Greece. Minerals Vol. 11, Nr. 7 (2021) Art.-Nr. 750.
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