The magnificent dagger from Hindsgavl with its blade less than 1 cm thick is the finest example of the flintworkers’ outstanding skills at the end of the Stone Age. It was found around 1876 on tihe island Fænø in the Little Belt.
Mayan Double Deity Eccentric Flint, 500 - Eccentric flints, such as this, were sacred, high status offerings and evidence of the skill and technology of the Mayan workshops. The delicate tan chert or flint is finely knapped with two opposing deity p
These are called Snyders points, but I understand they're a knife form. The finest examples seem to have been wealth or status items and have been found in high-status burials. This one is made from a nice piece of Keokuk chert from Oklahoma.