Black Obsidian Preshape Slabs - 3" Triangle - 5 Pack

Small triangle shaped black obsidian blanks for making arrowheads. Sold in packs of five. 3" long, 1.5" wide, .25" thick, These preshaped slabs can be pressure flaked as is, or serve as a solid starting point for flake-over-grind techniques. Slabs and preshapes are cut with diamond lapidary saws of #1 graded material. Black Obsidian is a popular volcanic glass favored by flintknappers for its consistent quality and uniform flaking. Knappers who favor pressure flaking techniques usually enjoy Obsidian in particular for its potential to run long, uniform flakes. WARNING: Obsidian flakes can be sharper than razor blades! Exercise extreme caution!   General Information on Obsidian                Obsidian is mineral-like, but not a true mineral because as a glass it is not crystalline; in addition, its composition is too complex to comprise a single mineral. It is sometimes classified as a mineraloid. Pure obsidian is usually dark in appearance, though the color varies depending on the pres