special #minerals exhiibit at #mineralientage München 2016 - Kyanite, meaning deep blue, from the Swiss canton of Ticino, Swiss http://pic.twitter.com/nD1e1SFKQL
— David Bressan (@David_Bressan) October 29, 2016
via Twitter https://twitter.com/David_Bressan
October 30, 2016 at 12:03AM
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