![Holding a piece of Obsidian in the hand. Obsidianis a naturally occurring volcanic glass formed as an extrusive igneous rock. March, Netherlands Stock Photo - Alamy Holding a piece of Obsidian in the hand. Obsidianis a naturally occurring volcanic glass formed as an extrusive igneous rock. March, Netherlands Stock Photo - Alamy](https://l450v.alamy.com/450v/2f6hbap/holding-a-piece-of-obsidian-in-the-hand-obsidianis-a-naturally-occurring-volcanic-glass-formed-as-an-extrusive-igneous-rock-march-netherlands-2f6hbap.jpg)
Holding a piece of Obsidian in the hand. Obsidianis a naturally occurring volcanic glass formed as an extrusive igneous rock. March, Netherlands Stock Photo - Alamy
![Obsidian: a naturally occurring volcanic glass formed as an extrusive igneous rock, from Vesuvius volcano, isolated on a white background, Naples, Italy Stock Photo | Adobe Stock Obsidian: a naturally occurring volcanic glass formed as an extrusive igneous rock, from Vesuvius volcano, isolated on a white background, Naples, Italy Stock Photo | Adobe Stock](https://as1.ftcdn.net/v2/jpg/02/37/21/26/1000_F_237212663_pAO12vka7S4e2Xxw4DvE1WODTVsIvBza.jpg)
Obsidian: a naturally occurring volcanic glass formed as an extrusive igneous rock, from Vesuvius volcano, isolated on a white background, Naples, Italy Stock Photo | Adobe Stock
Space Agency on Instagram: "Obsidian is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth. It is an igneous rock. Obsidian is produced
![Obsidian Volcanic Rock from United States Held in a Hand Stock Image - Image of gemstone, quartz: 188447795 Obsidian Volcanic Rock from United States Held in a Hand Stock Image - Image of gemstone, quartz: 188447795](https://thumbs.dreamstime.com/z/obsidian-volcanic-rock-united-states-held-hand-naturally-occurring-glass-formed-as-extrusive-igneous-produced-188447795.jpg)
Obsidian Volcanic Rock from United States Held in a Hand Stock Image - Image of gemstone, quartz: 188447795
BIOEFFECT - Obsidian is a beautiful naturally occurring volcanic glass found in Iceland that has a beautiful iridescent sheen. This was a great inspiration for SHOPLIFTER / Hrafnhildur Arnardóttir in designing the
New Zealand: History & Natural History - OBSIDIAN is a naturally occurring volcanic glass formed as an extrusive igneous rock. Obsidian is produced when felsic lava extruded from a volcano cools rapidly
![Obsidian natural volcanic glass - Rocks and Mineral Specimens for Sale | Diseños en mosaico, Cristales, Disenos de unas Obsidian natural volcanic glass - Rocks and Mineral Specimens for Sale | Diseños en mosaico, Cristales, Disenos de unas](https://i.pinimg.com/736x/00/be/30/00be30a09a2d0f4c229a676bfac7a9d2.jpg)
Obsidian natural volcanic glass - Rocks and Mineral Specimens for Sale | Diseños en mosaico, Cristales, Disenos de unas
![This is Obsidian, a naturally occurring volcanic glass It forms when lava, rich in silica, cools so rapidly on contact with air or water, that atoms are unable to arrange themselves into This is Obsidian, a naturally occurring volcanic glass It forms when lava, rich in silica, cools so rapidly on contact with air or water, that atoms are unable to arrange themselves into](https://external-preview.redd.it/SbTAtxfbehxOttK3-9LaTTiN19g_myTvOeLjpFNa_9Q.png?format=pjpg&auto=webp&s=04be433f2d7384e73efd620fdc37970c2f979c36)