This is a simple necklace combining high-vibration Terahertz stones that vibrate one trillion times per second☆ Terahertz stones are artificial stones that are said to emit Terahertz waves and have recently been gaining attention in the fields of health and beauty. [Materials] Terahertz Stone 99.9% High Purity Silicon AAA Star Cut Approx. 8mm 32-Facet Cut Approx. 4mm [Size/Specifications] Necklace Size 44cm Operon Rubber [Keywords] Beauty, Health, Life Rays, Harmony, Activation, Regeneration, Balance, Healing, Circulation, Power, Flow, Warming, Purification, Stone, Transparency, Lightweight, High Vibration Its metallic and cool shine gives a very stylish impression. Despite its metal-like appearance, it is extremely lightweight, making it attractive for long-term wear as an accessory☆ We can change the size up to 50cm (+200 yen). If you wish, please let us know in the comments before purchasing. Shipping will be via Mercari delivery. We strive for pleasant transactions☆ <New and Unused> Terahertz High Purity Star Cut Simple Necklace☆Beauty Health