Obsidian Volcanic Glass
Description
Obsidian or Volcanic Glass. Available in the Avoca shop or at the Castlemaine Vintage Bazaar as single chunks, large pieces or cut and polished slabs, also as polished gemstones. Please contact me if you wish to make an online purchase.
Obsidian
Is a rock formed of Felsic volcanic igneous, the major minerals include Hematite Feldspar with a high Silica content. Obsidian can occur when Rhyolite lava cools quickly. Sheen Obsidian is created when tiny gas bubbles are present.
Group: Volcanic Glass
Colour: Black, brown, red, green, mahogany, peacock
Composition: SiO2
Hardness: 5
Fracture: Conchoidal
Lustre: Vitreous
Specific Gravity: 2.4
Obsidian is a strong protective stone, forming a shield against emotional negativity. It grounds you to the earth through the base chakra and strengthens you in times of need. It is helpful to highly sensitive people. It blocks psychic attack and removes negative spiritual influences.