This is the polished on the one side blue violane specimen. Dimensions: 2.4 x 1.2 x 0.4″ (6.1 x 3.1 x 1.1cm). Weight – 0.9oz (26 grams). Origin: Russia, Transbaikalia.
Some information about violane:
Violane is a variety of the diopside mineral bluish tones. Violane color is due to admixture of manganese and iron. Contains 10% jadeite and aegirine components.
Known deposits from Italy (Saint-Marcel, Piedmont) and Russia. In Russia deposits are located in the Transbaikalia, Altai and Sayan.