This is the raw blue violane specimen. Dimensions: 2.8 x 2.0 x 0.8″ (7 x 5 x 2cm). Weight — 2.9oz (83 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.