picture shows several different examples of Gerzean knives. They all
have the same basic long curving blade edge and a straight to
slightly concave back edge. They illustrate two main differences in
the manufacturing process. Four of the knives were made from
bifacially percussion flaked preforms. The other three knives (top
row three from the right) were
made from large flakes. Two of these flake Gerzean knives have
parallel flaking on one side that obviously enhances their eye
appeal. It's interesting to note that just the large flakes alone,
without the added decorative pressure flaking would have been just
as functional for cutting purposes. These types of Gerzean knives
were easier to make because they skipped the time consuming process
of bifacially percussion flaking a preform and grinding both sides
smooth prior to applying the parallel "ripple" flaking on one side.
These must have been the cheaper "poor man's" Gerzean knives.