The tool durability increases from high speed steel cemented carbide polycrystalline diamond, but that sequence also applies to costs.
dolomite crystals are never seen to form polycrystalline aggregates or concretions, or ever to envelop the adjacent silicate grains.
microstructure in a polycrystalline material is strongly dependent on lattice planes.
Alternatively a block of polycrystalline silicon is sliced to produce the size of wafer required.
Solar panels are available commercially in three forms: monocrystalline solar panels, polycrystalline solar panels, and amorphous solar panels.