Diamond Products

What is the difference between mono- and polycrystalline diamonds?
As the name says, monocrystalline diamonds consist of one single crystal, whereas polycrystalline diamonds consist of many crystals. Therefore, monocrystalline diamond products are usually white, unless coloured and polycrystalline products are dark grey to black, depending on the grain size and amount of diamonds in the product. Polycrystalline diamonds will eventually break down into smaller particles with still sharp cutting edges. Therefore, they will be more efficient than monocrystalline diamonds and continue to remove material. Polycrystalline diamonds are usually used for harder materials and the highest requirements in metallography. Monocrystalline diamonds are often used for softer materials that do not wear the diamonds so fast.

No, they are not. You can be sure that a white diamond product is based on monocrystalline diamonds but you can easily add black colour to e.g. a white suspension and make it look “polycrystalline”. The only way you can be sure about the contents is when the manufacturer specifies diamond type etc. on his products.
On all our diamond products we not only specify the diamond type, but also the diamond concentration and the grain size distribution.