Flintknapping Spalls Mix - Large Flat Rate Box - Free Shipping

Large USPS Flat Rate box packed with 20 pounds of our #1 graded and cleaned 3-6 inch Flint knapping Spalls Mix (Heat Treated Keokuk, Georgetown Flint, Mahogany Obsidian, Black Obsidian, & Dacite). Box price includes shipping within the domestic United States.

This box of material contains a well rounded mix of select knapping stones that include some of everything we have to offer: Heat treated Keokuk, Georgetown Flint, Dacite, Mahogany Obsidian, and Black Obsidian. These 3-6 inch mixed spalls are ideal in size for producing medium to large points and blades. Priority Mail Postage within the United States is pre-paid and included in the price of this 20 lb box of 3-6 inch Mixed Spalls.

International Customers: The large flat rate box is not available for shipment due to an international weight cap on this size box. Please try one of our medium flat rate boxes or the 'rock by the pound' product category. Extra International shipping costs applied at checkout. 

Keokuk is a high quality chert found in parts of Oklahoma and surrounding areas. Keokuk is typically cream to pink colored when heated, and may contain bands and speckles of bright red and brown. Georgetown flint is a grey/blue nodular flint found in limestone deposits in Central Texas. Dacite, Mahogany Obsidian, and Black Obsidian are all either red/brown/black, fully black, or grey igneous stone found in areas with past volcanic activity. Dacite is more textured and 'stone' like than the Obsidians, which is essentially volcanic glass.

WARNING: Obsidian and Dacite flakes can be sharper than razor blades! Exercise extreme caution! We highly recommend using gloves to work these materials as they will make even the most experienced knapper bleed.

We strive to provide the cleanest, blemish free knapping material within our means. On some spalls however, blemishes do get past us because not all defects are evident at first or even second inspection.  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.

Large knapping material requires large billets. 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. If you are graduating to this size material from one of our kits, we recommend adding a large copper percussion billet to your order. If you are unsure about what you need, please visit our Flintknapping Buyer's Guide, or feel free to contact us and we will be glad to help.