Silicon nanoparticles with sizes between 100 and 200 nm have been experimentally shown to exhibit strong magnetic dipole resonance in the visible spectrum. This resonance can be continuously tuned across the entire visible range by varying the nanoparticle size. The magnetic dipole resonance is observed through dark-field optical microscopy, where the scattered "magnetic" light is visible. The results demonstrate that these nanoparticles can act as a source of "magnetic light," providing new possibilities for low-loss optical metamaterials and nanophotonic devices. The magnetic dipole resonance in silicon nanoparticles arises from the excitation of a specific mode inside the particles, where the electric field has a ring-shaped distribution and the magnetic field oscillates in the center, similar to a magnetic dipole. This is in contrast to traditional metal-based split-ring resonators, which suffer from high losses at visible frequencies. Silicon nanoparticles, however, have much lower losses and can achieve magnetic resonance in the visible range. The study used laser ablation to fabricate silicon nanoparticles of various sizes and analyzed them using dark-field optical microscopy, single nanoparticle dark-field spectroscopy, and scanning electron microscopy. The results showed that the color of the nanoparticles is primarily determined by the strongest resonance peak, which shifts from blue to red as the magnetic resonance wavelength changes from 480 nm to 700 nm. Theoretical analysis using Mie theory confirmed the experimental results, showing a clear correlation between the experimental and theoretical spectra. The presence of a silicon substrate was also considered, and its influence on the scattering spectra was analyzed. The results showed that the electric dipole resonance is red-shifted due to the "surface dressing effect," while the magnetic dipole resonance remains largely unaffected. This study demonstrates the potential of silicon nanoparticles for applications in optical metamaterials and nanophotonic devices, offering a new approach to achieving strong magnetic responses with low losses. The findings highlight the importance of dielectric materials in the development of metamaterials and open new avenues for the design of low-loss visible-range metamaterials and nanophotonic devices.Silicon nanoparticles with sizes between 100 and 200 nm have been experimentally shown to exhibit strong magnetic dipole resonance in the visible spectrum. This resonance can be continuously tuned across the entire visible range by varying the nanoparticle size. The magnetic dipole resonance is observed through dark-field optical microscopy, where the scattered "magnetic" light is visible. The results demonstrate that these nanoparticles can act as a source of "magnetic light," providing new possibilities for low-loss optical metamaterials and nanophotonic devices. The magnetic dipole resonance in silicon nanoparticles arises from the excitation of a specific mode inside the particles, where the electric field has a ring-shaped distribution and the magnetic field oscillates in the center, similar to a magnetic dipole. This is in contrast to traditional metal-based split-ring resonators, which suffer from high losses at visible frequencies. Silicon nanoparticles, however, have much lower losses and can achieve magnetic resonance in the visible range. The study used laser ablation to fabricate silicon nanoparticles of various sizes and analyzed them using dark-field optical microscopy, single nanoparticle dark-field spectroscopy, and scanning electron microscopy. The results showed that the color of the nanoparticles is primarily determined by the strongest resonance peak, which shifts from blue to red as the magnetic resonance wavelength changes from 480 nm to 700 nm. Theoretical analysis using Mie theory confirmed the experimental results, showing a clear correlation between the experimental and theoretical spectra. The presence of a silicon substrate was also considered, and its influence on the scattering spectra was analyzed. The results showed that the electric dipole resonance is red-shifted due to the "surface dressing effect," while the magnetic dipole resonance remains largely unaffected. This study demonstrates the potential of silicon nanoparticles for applications in optical metamaterials and nanophotonic devices, offering a new approach to achieving strong magnetic responses with low losses. The findings highlight the importance of dielectric materials in the development of metamaterials and open new avenues for the design of low-loss visible-range metamaterials and nanophotonic devices.