High Purity Terahertz Mirror Cut Necklace Unisex Mirror Cut Beads 4mm (±0.5mm) Neck Circumference: Approximately 43cm (including clasp) Standard Specification: Nylon wire, Surgical Stainless Steel 316L Lobster Clasp (Picture 3) Genuine High Purity Terahertz Guarantee. Try pressing it against ice after purchase. The part that touches will melt. * We can change the necklace length and clasp. It will be +¥260 for every 5cm. If you prefer a spring ring clasp, we can change it for free. Also, if you want to add an adjuster, it will be +¥200. Both are made of surgical stainless steel. Please let us know when you purchase. (Picture 8) This product uses surgical stainless steel 316L, so you don't have to worry about metal allergies or corrosion. Also, although it is not surgical stainless steel, you can change to the magnetic clasp in pictures 4-6 for +¥400. If you want to make changes, we can also combine your favorite power stones in your favorite places or add a power stone to the top, so please consult us before purchasing. Top power stone +¥200 and up. ◎ Effects of Terahertz ○ Improves stiffness and blood flow ○ Restores the rhythm of distorted cells ○ Promotes and maintains health ○ Activates cells ○ Promotes metabolism Terahertz ore is an artificial ore that emits a frequency of approximately 1 trillion molecular vibrations per second in the far-infrared region, called terahertz waves. The components of terahertz ore are made of silicon, which is an essential element for living organisms. Terahertz waves are said to act deep within human cells, correcting the rhythm of distorted cells and returning them to the correct rhythm, and improving stiffness and blood flow. Terahertz waves are also called "growth rays" and "life rays," and are being studied by various research institutions, such as universities, as essential for the metabolism, growth, and development of life. It is light and easy to handle, but it is sharp when broken, so care must be taken when handling it if it breaks. Terahertz ore is said to be a stone that supports health and activates cells, so it is recommended for those who want to improve their health, those who tend to have stiff bodies, and those who want to stay youthful. Artificial ore Silicon Titanium Hematite Terahertz waves NASA Pendant top