Rough Diamonds for industrial use
Since the industrial revolution in the 19th century, diamonds, on account of their hardness, have had many applications: polishing discs, drills, chisels, but also in electronic appliances for drawing extremely thin and precise conducting wire, or in very precise medical instruments.
About 5% of the total world production of diamonds is processed into jewellery diamonds: the rest is used for industrial purposes. Rough diamonds like these, in a colour unsuitable for use in jewellery, are crushed for industrial use.
