There are several things that are going to make your task difficult. First and foremost, Apache describes a large group of Athabaskan speakers. There are a number of tribes who are Apache, each with there own dialects, clothing styles, etcetera. Secondly, they were scattered across a wide area, including parts of Texas, New Mexico, Arizona and Mexico. Finally, several of the groups had encountered the Spaniards in the early 1600's, and had been trading with pueblo tribes before that, gaining access to metal points and knives. By the time someone decided to start collecting their material culture, metal points were most commonly being used. Having said that, there are some examples of stone arrow points collected among the Apache. It seems like making stone points continued for a much longer period of time in the West and Southwest, than in the Central and Eastern United States. Most tribes in the eastern and central U.S. quit making stone points and knives by the early to mid-1800's. By this time, the Cheyenne had pretty much lost the art of making stone points. They used points that they found, but their story was, the points could be found where lightning hit the ground.
These photos are not great, but they are Apache arrows with stone points. I have to admit, Apache culture is not an area of study for me. Maybe someone on here will have a better answer for you. I do not know of any stone lance points or knives that were collected, though there may be some somewhere. Curtis