Pieces of elite from the Karelia region, Shun'ga, Russia. Shungite elite contains more than 98% carbon and is reputed to contain fullerenes.

About 0.8"-1.0" x 0.45-0.65" x 0.15-0.45" (20-25mm x10-15mm x 3-10mm)

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Sold individually. Sizes and shapes vary.