Emblematic Paleolithic tools, bifaces come in many shapes and quality depending on the period of their creation (Acheulean, Mousterian). The main shapes are:
I only knap cordiforms and triangulairs bifaces -this is an aethetics choice- made of flint or obsidian.
Cordiform (heart shaped) flint biface
Triangulaire flint biface
The average price for bifaces is 21 €
Cordiform obsidian biface replica