Natural Black Diamonds and Their Magnetic Sensitivity
Channel: gemmology
Date: 2020-06-26

Black colour could occur amongst any diamond type (Ia, Ib, IIa, IIb)
Most natural diamonds are non-magnetic. However, very rarely, a natural diamond can be attracted by a magnet. This occurs when the diamond contains numerous and/or large inclusions of minerals such as pyrrhotite, magnetite, or native iron etc. The presence of these minerals makes the diamond magnetic, and it will be attracted by a strong magnet. 

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