Check the listing for details. Spiderweb Obsidian Stone Sphere 1.7 inch or 43 mm Gemstone #O1. Condition: New. Listed at 30.00 USD. Spiderweb Obsidian Stone Sphere Rock This semiprecious stone Spiderweb Obsidian sphere is 1.7 inches or 43 mm in diameter. This material is hard to photograph-very reflective. Obsidian is a natural volcanic glass. This glassy, lustrous mineral is found in lava flows. Obsidian is produced when lava cools very quickly. The lava cools so quickly that no crystals can form. Spiderweb Obsidian was discovered in Chihuahua, Mexico. Only a small amount of rough is coming out! It is a lovely midnight blue with light blue or gray "webbing'. Obsidian was important to many ancient cultures. It was one of the major barter materials, and has been used since prehistoric times for making tools, masks, weapons, mirrors and jewelry. Obsidian was named after a Roman-Obsius. Metaphysical Properties: Legends say Spiderweb Obsidian provides strength in times of need. Listing and template services provided by inkFrog