In summary, we have demonstrated a versatile metallic glass coating for nanoparticles synthesized in aqueous solution. Coating thickness can be precisely controlled by varying the nanoparticle concentration. The coating thickness has low variation above a thickness of 5 nm. These coatings are chemically stable, radiation resistant, and para/ferromagnetic. The synthesis strategy is universal for different core sizes, shapes, and compositions, and could easily be extended to other aqueous nanoparticle cores such Pd, Cu, Fe3O4 and CdSe . The presence of a ligand, CTAC or citric acid, or underlying nanoparticle metal, Au or Pt, did not affect the coating synthesis and future work could expand the synthesis strategy to more nanoparticle metal/ligands. Coating compositions could be extended to other amorphous metal borides, e.g. FeB.