Is Star City Obsidian true?

This is not true. Xingcheng City is located in Huludao City, Liaoning Province. Obsidian is a black gem, and volcanic crystals are usually black. Obsidian is mainly distributed in areas with volcanic activity. The obsidian in Xingcheng is not real. There is no condition to produce obsidian here in Xingcheng, Liaoning. It is formed by the rapid cooling and condensation of volcanic lava and its crystal structure, so it is usually found in the periphery of lava flow.