ABOUT OBSIDIAN 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 with minimal crystal growth. It is commonly found within the margins of rhyolitic lava flows known as obsidian flows, where the chemical composition (high silica content) causes a high viscosity which, upon rapid cooling, forms a natural glass from the lava. The inhibition of atomic diffusion through this highly viscous lava explains the lack of crystal growth. Obsidian is hard, brittle, and amorphous; it therefore fractures with very sharp edges. In the past it was used to manufacture cutting and piercing tools and it has been used experimentally as surgical scalpel blades. Physical: A traveler's stone, protection in the night. Especially helpful in times of grief, depression. Believed to reduce the pain of arthrIt's, to help joint problems and to ease cramps. Obsidian aids the digestion and detoxifies, dissolving blockages, including harden arteries. Warms the extremities. Accelerate the physical healing of wounds. fashion necklace Brand: c1lint7785631 Name; Kwan-Yin Bodhisattva Buddha Pendant Pendant size;53MM *33MM Pendant material; Obsidian We are the company specilizing in designing fashion and stylish beads bracelets and beads necklace with genuine stone. All stone necklaces are picked better material, come for you without blemish or any defect problem Durable smart adjustable handmade rope necklaces with unique braided style making your outstanding Guanyin has a soft heart and a dignified manner. The wearer can eliminate violence, keep peace forever, eliminate disasters, and stay away from harm. If you can use Guanyin to make up for your own shortcomings, and be more compassionate and gentle like Guanyin, you will naturally have Guanyin bless you.