【Oil-in-Quartz】Bracelet ✨Extremely Rare✨ This is a very rare crystal, featuring double-terminated points like Herkimer diamonds, with natural oil (petroleum) trapped inside during the crystal's growth. When exposed to a black light, the oil fluoresces, emitting a fantastic glow. You can also see the oil moving and the air bubbles inside shifting when you tilt the stone. ◇ Bead Size: Approximately 6.5mm ◇ Inner Circumference: Approximately 16cm (Adjustable to a maximum of approximately 19cm) Oil-in-Quartz, a mystery of the Earth✨, is highly sought after both as an accessory and for display, but its rarity makes it difficult to obtain. We welcome those who feel a connection to it!✨ ※ New, unused, and opened for photography. ※ Although unopened, it has been stored at home, so please refrain from purchasing if you are concerned. #OilInQuartz #DoubleTerminatedCrystal #Herkimer #Bracelet #PowerStone #NaturalStone