[GOLD STONE] Terahertz Blue Beitou Stone Necklace, Genuine 6mm Blue Hokutolite, Hook Type, Approximately 40cm Long

Diameter 6mm (±0.5mm) Length approximately 40cm (adjustable clasp allows for approximately 5cm length adjustment.) Terahertz waves vibrate approximately 1 trillion times per second. Hokuto stone is also known as the "stone that keeps doctors away." This product is a new product that successfully achieves a blue color by fine-tuning the ingredients of the Hokuto stone powder when kneading it. It will be shipped in a case with the GOLD STONE logo.