Engineering Diamond Materials for Extreme Applications Appsilon Diamond Technologies develops and manufactures engineered single-crystal and polycrystalline CVD diamond materials for demanding thermal, optical, quantum, electronic, medical, and industrial applications. With capabilities across diamond growth, seed and wafer preparation, precision laser processing, surface finishing, metallization, and characterization, we help customers move from material requirement to application-ready diamond solution. Operating from Istanbul and Delft, Appsilon combines deep materials science expertise with vertically integrated production capabilities to deliver diamond materials tailored to each customer’s performance, geometry, surface, coating, and integration needs.