Sedimentary Rock Used by American Indians to Make Knives I find it amazing how Native Americans made knives from sedimentary rocks. It shows their cleverness. Many Native communities used rocks for tools. A Native American stone knife made from chert is a great example. Chert is a fine-grained rock. It was often used for making tools because of its quality. I love learning about Native American crafts. To learn more, check out www.damascus1.com. Key Takeaways Native Americans used sedimentary rocks to create knives and other tools. Chert was a popular material for making these tools due to its fine-grained texture. The craftsmanship involved in creating these tools is a testament to the ingenuity of Native Americans. Understanding these ancient techniques...