This is the raw blue violane specimen. Dimensions: 2.1 x 1.5 x 0.7″ (5.3 x 3.9 x 1.9cm). Weight — 1.7oz (47 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.