The existence of hematite (iron oxide) can generate red and brown styles of obsidian, though little gasoline bubbles might produce a golden sheen. Dim bands or mottling in gray, environmentally friendly, or yellow are also noted for this interesting rock variety. But How about breaking out on the norm https://augustuphxq.thelateblog.com/28454317/black-metallic-material-with-silver-stone-color-no-further-a-mystery