NAT monocrystalline natural micron diamond powder, precision size range

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NAT micron diamond powder derives from natural industrial diamond which is processed to precision micron sizes. Specialized milling and cleaning processes yield sharp-edged, free-cutting particles. NAT diamond is available as diamond powder and as ready-to-use diamond suspension.

Narrow tolerance: The narrow tolerances in particle size distribution guarantee consistent lot-to-lot performance.

This material data has been provided by Microdiamant.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts





23.0 °C

3.51 g/cm³

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Particle size range

0 - 60 µm

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Please refer to the technological properties section below for more detailed (narrow) particle size ranges available.



Hardness, Mohs

23.0 °C

10 [-]

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Coefficient of thermal expansion

23.0 °C

1.1E-6 1/K

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Thermal conductivity

23.0 °C

600 - 4000 W/(m·K)

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Band gap

5.5 eV

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Electrical resistivity

23.0 °C

1.00E+12 - 1.00E+19 Ω·m

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Chemical properties



98 %

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min. purity

Technological properties

Application areas

NAT diamond is suitable for the production of electroplated diamond tools such as grinding wheels, drills and saws. In loose particle form, NAT diamond is used for polishing of diamond wire dies made of natural diamond and PCD.


Light gray

Crystal structure



Precision size range: A narrow particle size distribution maximizes the amount of particles of the same size while fine and coarse particles are minimized. Combined with a clearly defined upper size limit, this feature allows for both high process reproducibility and superior results in surface quality.


Blocky particle shape: NAT diamond has the same monocrystalline structure as synthetic diamond, but without the traces of metal catalysts which are inherent to synthetic diamond. Natural diamond features distinct cleavage planes. This results in blocky and irregular shaped, free-cutting particles. For bonded diamond tools, the fracturing mechanism of the diamond provides a self-sharpening of the tool which increases its service life.

Particle size range table

Micron Size
Median (D50)
Upper Limit (D99)
µm max.
NAT   (0-0.25)0.1250.105-0.1450.33
NAT   (0-0.5)0.210.18-.0240.53
NAT   (0.25-0.5)0.350.31-0.390.70
NAT   (0.25-0.75)0.50.45-0.550.90
NAT   (0.5-1)0.710.65-.0771.30
NAT   (0.75-1.25)1.000.95-1.051.70
NAT   (1-1.5)1.191.13-1.252.00
NAT   (1-2)1.421.35-1.492.30
NAT   (1.25-2.25)1.691.61-1.772.60
NAT   (1.5-2-5)21.9-2.13.00
NAT   (1.5-3)2.392.27-2.513.50
NAT   (2.25-3.5)2.842.70-2.984.10
NAT   (2.5-4)3.373.20-3.544.90
NAT   (3-5)4.023.82-4.225.80
NAT   (4-6)4.874.63-5.116.80
NAT   (4.5-7)5.75.42-5.987.90
NAT   (5.5-8)6.86.46-7.149.20
NAT   (6-10)8.17.70-8.5010.9
NAT   (8-12)9.69.12-10.0812.9
NAT   (10-16)12.511.9-13.117.9
NAT   (10-20)1514.2-15.821.5
NAT   (15-25)2019.0-21.026.5
NAT   (20-30)2523.7-26.332.5
NAT   (20-40)3028.5-31.541.5
NAT   (30-40)3533.2-36.846.0
NAT   (35-45)4038.0-42.051.0
NAT   (40-60)4744.6-49.462.0


NAT diamond is processed from mined industrial quality natural diamond. Diamond is formed in depths of several hundreds of kilometres underground in conditions of high pressure and high temperature. Volcanic activity eventually forces the diamond to the earth’s surface. NAT diamond particles are of a monocrystalline structure featuring cleavage planes oriented parallel to the optical axis.