Pure L-Asparagine and L-Asparagine admixtured with cadmium chloride using de-ionised water as solvent of size of 19mm x 14mm x6mm and 6mm x 4mmx2mm were grown by slow evaporation technique. Structural confirmations of grown crystals were done by powder x-ray diffraction. The various absorption peaks were obtained from FTIR study. The grown crystals were optically transparent and cut off wavelengths were 220nm and 203 nm and corresponding energy gap values were 5.46 eV and 6.11eV respectively. From the mechanical results, it is noticed that the hardness number increases with the applied load and the value of hardening coefficients of the grown crystals were greater than 1.6. So the grown crystals belonged to the soft material category.