Graphite powder (Synthetic Natural), also called plumbago or black lead, mineral consisting of carbon. … Graphite is dark gray to black, opaque, and very soft (with a hardness of 1 1/2 on the Mohs scale), while diamond may be colourless and transparent and is the hardest naturally occurring substance.
Graphite powder (Synthetic Natural), also called plumbago or black lead, mineral consisting of carbon. … Graphite is dark gray to black, opaque, and very soft (with a hardness of 1 1/2 on the Mohs scale), while diamond may be colourless and transparent and is the hardest naturally occurring substance.
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