Obsidian is a unique geological wonder and very beautiful. My mother had a polished piece on her bookshelf and I've been admiring its beauty since my childhood.
Thanks for sharing this photo!
My grandson kept picking up samples to show me and saying "it's so pretty, Nana" and, indeed it is. Thanks, Doerthe.
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Photo taken in Bend, OR, USA
Misplaced? Suggest new location