Chemical Vapor Deposition / CVD Diamond is a type of Single Crystal Diamond (SCD) that is a synthetic diamond grown from the chemical vapor deposition (CVD) process. The process starts with a diamond seed that is put inside a special furnace. A high-carbon gas is injected into the chamber and gets heated up with microwave. Under the intense heat, the gas turns into a plasma state where the chemical bonds in the gas molecule is broken apart. The free-floating atoms resulted from the thermal dissociation grow around the diamond seed to create larger diamond crystals. The result is synthetic diamond that is chemically identical to natural diamond. CVD diamond is clear in color or has a light brown tint. CVD diamond cutting tool is considered to be a step above mono crystal diamond (MCD) tool. Synthetic single crystal diamond produced CVD process tends to be slightly harder than those produced by HPHT process (i.e. MCD). However, CVD diamond is also more brittle. Therefore, the feasibility of CVD diamond cutting tool is limited. It is generally used in applications where even better surface finish is required where MCD cutting tool cannot achieve.