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in numerous processes the raw material is cleaned refined and pulverized rado s high-tech lanthanum is created by mixing lanthanum boride with boron carbide in a further processing stage blanks are subjected to extremely high pressure and brought to their final form in the sintering furnace at temperatures over 1,600°c the final polishing with diamonds which takes several hours gives rado high-tech lanthanum its incomparable mysterious radiance and fascinating deep purple color.