Obsidian Gemstone Necklace

Free Ground Advantage Shipping from California to USA addresses. Tested with Presidium Gem Tester II. Tests as hardened glass. Obsidian is a natural glass associated with a volcano. Obsidian is an extrusive igneous rock that forms by very rapid cooling. It is volcanic glass. It makes beautiful jewelry. The Cross charm is one inch. 17.5" plus 2" extender wax rope chain in black20" plus 2" extender silk rope in black22" plus 2" extender silk rope in black 16" 1mm 925 tagged Sterling Silver Plated Snake Chain18" 1mm 925 tagged Sterling Silver Plated Snake Chain20" 1mm 925 tagged Sterling Silver Plated Snake Chain22" 1mm 925 tagged Sterling Silver Plated Snake Chain24" 1mm 925 tagged Sterling Silver Plated Snake Chain 16" 0.8mm Black Rhodium Plated Solid Sterling Silver Snake Chain18" 0.8mm Black Rhodium Plated Solid Sterling Silver Snake Chain20" 0.8mm Black Rhodium Plated Solid Sterling Silver Snake Chain