Old writing reads, "BUTTERLAW BERWICKSHIRE", and some more writing which is difficult to make out. Butterlaw, Berwickshire, Scotland MANU Unknown This flint knife or scraper is roughly rectangular or oval in shape (i.e. the sides are fairly straight, but the corners are rounded). It is dark brown in colour, with some lighter grey-brown patches.
A flint knife such as this would be made by a process known as "knapping", which involves chipping at a piece of flint or other stone, until it forms the desired shape. A very sharp edge can be made using this technique, which requires great skill. The edge can then be kept sharp by chipping further small pieces off the tool, as is required, and such marks can sometimes be seen using microscopic analysis.