What is stronger a emerald or obsidian?

Answer 1

Obsidian is generally stronger than emerald in terms of hardness and durability. Obsidian, a volcanic glass, ranks about 5.5 on the Mohs scale of mineral hardness, while emerald, a variety of beryl, typically ranks between 7.5 and 8. However, emerald is more prone to fractures and inclusions, making it less durable in practical use. Therefore, while emerald is harder, obsidian is tougher and less likely to break under stress.