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Diamond tool
A diamond tool is a cutting tool with diamond grains fixed on the functional parts of the tool via a bonding material or another method. As diamond is a superhard material, diamond tools have many advantages as compared with tools made with common abrasives such as corundum and silicon carbide.
==History==
In ''Natural History'', Pliny wrote "When an ''adamas'' is successfully broken it disintegrates into splinters so small as to be scarcely visible. These are much sought after by engravers of gems and are inserted by them into iron tools because they make hollows in the hardest materials without difficulty."〔(【引用サイトリンク】title=Natural History )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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