Crushed Black Obsidian Sand from Mexico, 3 Sand Sizes for Woodworking and Ring Inlay, Resin Art, Memorial Jewelry

Obsidian is a volcanic rock that cools very rapidly from silica-rich lava to form volcanic glass. Volcanic glass can vary in color; however, it is commonly a black color. Because of its conchoidal fracture, obsidian has been used since the Stone Age for tools, weapons, and as an ornamental material. This particular crushed obsidian is from Mexico and is very clean and free of impurities.  MATERIAL SIZE Our medium crushed material is considered to be sand sized, from very fine to coarse sand, and is available in three size variations: 1mm to 2mm, 0.25mm to 2mm, and 0.25mm to 1mm. Our sand-sized material is ideal for a wide range of creative projects, including woodworking inlays, memorial and resin jewelry, orgonite pyramids, ring inlay, resin molds, mosaics, terrariums, bezel cups, resin art, embellishments, and metaphysical projects. *1mm to 2mm: medium to coarse sand; narrow grain size distribution with similar size particles *0.25mm to 2mm: very fine to coarse sand; wide grain size