IMG_5528
Granite | Sakuragawa, Ibaraki prefecture, Japan | 2014 | copyright
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IMG_0981
Akademie Der Bildenden Künste München | artist unknown | 2016 | copyright
IMG_0807
Bernhard Schobinger | Ring ‘sushi’ 2006 | Saphir-Kristall, Weißgold, Gold 18 kt., Diamant, Zinnober | From the book ‘Gemstone/Art from Wilhelm Lindemann |  2016 | copyright
IMG_1619
Agatised Rhyolite specimen | GemKhana, Melbourne, Australia | 2012 | copyright