SOLD | Obsidian Kugel | Mexiko wonder stone The oil shale matrix surrounding

The oil shale matrix surrounding the fossil underscores its authenticity and adds to its overall aesthetic appeal

giving rise to many myths of origin and beliefs about their magical and medicinal properties

preserving the structure of the wood

showing growth lines as can be seen in the detailed pictures

SOLD | Obsidian Kugel | Mexiko wonder stone The oil shale matrix surroundingOrigin: Mexico Size: Diameter 21cm Description: Spherical, polished to bring out rich black tones. Cut in Mexico. Additional Information: Obsidian is a naturally occurring volcanic rock glass formed by the rapid cooling of viscous lava from volcanoes. Obsidian is extremely rich in silica (approximately 65 to 80 percent), has little water, and a chemical composition similar to rhyolite. Obsidian has a glassy luster.