Kirara Onsen
- Location
- Sado Island, Niigata Prefecture, Japan
- Water type
- silica
- Temperature
- 40 °C
- pH
- 7.2
Water profile
Relaxing — deep, immediate muscle release.
Rich in trace elements — gentle on the skin.
Soft water — natural, classic buoyancy.
Kirara Onsen takes its name from kirara—the Japanese word for mica, the glittering mineral found in the local geology—a name that captures the sparkling, jewel-like quality of siliceous spring water as it catches the light and shimmers in the bath. Part of the Echigo Sekikawa Onsenkyo in Niigata Prefecture, Kirara Onsen offers siliceous and simple waters prized for their silica-rich skin-softening properties, which give the bath a characteristic smooth, silk-like sensation beloved in Japan's bijin no yu tradition. The mica-rich surroundings and lustrous waters combine to create a bathing experience of exceptional natural beauty and mineral refinement.