crushing bort

diamond

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Last updated

July 20, 2026

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Bort is a variety of industrial diamond, characterized by its imperfect crystallization and often gray to black color due to inclusions and impurities. It is considered the lowest grade of diamond and is used as an abrasive.123

Crushing bort is processed by being crushed into abrasive grits of various sizes. Its primary application is in the manufacturing of grinding wheels for sharpening cemented carbide metal-cutting tools. It is also utilized as loose grains in oil or water for lapping and polishing. The majority of the world's crushing bort originates from Congo (Kinshasa).2

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industrial diamond
Crushing bort, the lowest grade of diamond, is crushed in steel mortars and graded into abrasive grits of various sizes; 75 percent of the world’s crushing bort comes from Congo (Kinshasa). Its chief use is in the manufacture of grinding wheels for sharpening cemented carbide…
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Crushing bort, the lowest grade of diamond, is crushed in steel mortars and graded into abrasive grits of various sizes; 75 percent of the world’s crushing bort comes from Congo (Kinshasa). Its chief use is in the manufacture of grinding wheels for sharpening cemented carbide…
Read More