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    Prehistoric Stone Tools Categories and Terms,  · This glossary of stone tool types includes both ground and chipped stone tools, as well as general terms used to reference stone tools. Arrowheads / Projectile Points: Most people exposed to American western movies recognize the stone tool called an arrowhead, although archaeologists prefer the term projectile point for anything other than a stone tool fixed to the end of a shaft and shot with ...List of diamond mines,  · There are a limited number of commercially available diamond mines currently operating in the world, with the 50 largest mines accounting for approximately 90% of global supply. Diamonds are also mined alluvially over disperse areas, where diamonds have been eroded out of the ground, deposited, and concentrated by water or weather action.