A one-of-a-kind ring crafted from rare "Fluorite in Quartz," featuring fluorite inclusions. Fluorite, known for emitting a soft glow when exposed to ultraviolet light or heat, has long been called "hotaru-ishi" (firefly stone). While its low hardness makes it commonly appreciated as a specimen, fluorite trapped within quartz becomes exceptionally rare, with only two known production sites worldwide and current mining being extremely difficult. This ring showcases a cushion-cut quartz of high transparency, within which gentian-colored fluorite floats as if freed from gravity. The setting is finished in matte, allowing ample light from all directions to enhance the stone's fresh, luminous brilliance. A special ring that adds refined elegance and just the right amount of sparkle to everyday wear.