Black Obsidian Spalls - Large Flat Rate Box - Free Shipping

Large USPS Flat Rate box packed with 20 pounds of our #1 graded and cleaned 3-6 inch Black Obsidian Spalls. Box price includes shipping within the domestic United States. Our cleaned and graded black Obsidian spalls range in size from 3-6 inch pieces. This size is good for large and medium points and blades. 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. Priority Mail Postage within the United States is pre-paid and included in the price of this 20 lb box of 3-6 inch Black Obsidian 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.  WARNING: Obsidian flakes can be sharper than razor blades! Exercise extreme caution! We hig