Obsidian Archive

Obsidian Facts by Obsidian  Properties Chemical Composition It is Silicon Di Oxide and the chemical formula is SiO2. Colours Black, Dark Green, Dark Brown. Other rare colours are blue, …

Obsidian Facts and Buying Guide by Sheweta Dhanuka After the volcanic eruption, while hot lava flows into the water some changes takes place during that time. These changes result …