If you are graduating to this size material from one of our kits, we recommend adding a large copper percussion billet to your order. Attempting to knap large stone with too small of a billet will damage the billet and not produce sizable thinning flakes early on in the process as needed. Large knapping material requires large billets. In efforts to avoid defects as much as possible, we perform a few thinning blows to ensure that you do not pay for large amounts of waste, over thick spalls, or fragile/thin sizes that will shatter with the first strike. On some spalls however, blemishes do get past us because not all defects are evident at first or even second inspection. We strive to provide the cleanest, blemish free knapping material within our means.
WARNING: Obsidian flakes can be sharper than razor blades! Exercise extreme caution!
Buy obsidian knife full#
To make certain you receive the full range of sizes of this material you will need to order multiple pounds or purchase a flat rate box of material. Most often a one pound order will contain two pieces of stone in the approx 4 inch range. Ordering 1 pound of this material will not ensure that you will get a single 6 inch spall. This size is good for large and medium points and blades. Our cleaned and graded black Obsidian spalls range in size from 3-6 inch pieces. 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 super long flakes.
Medium to large spalls of #1 graded and cleaned black volcanic glass.
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