Miniature of Obsidian of volcanic origin due to the rapid cooling of lava, rich in Silicon. Ideal for collectors and curious about its history. In Roman times, obsidian was used as the first weapon for hunting and defense. Obsidian pieces were carved, giving it a pointed shape for spears. It was discovered in Ethiopia. This specimen comes from China. Approximate size of 5 x 2.5 cm. Weight 10 gr.
