Thank you for viewing! (*^^*) Click here for other Pianico products ↓ #PianicoShop ⭐Product Description⭐ Terahertz Necklace ※ I think the clear stone was crystal, but I've forgotten. I purchased this several years ago at a limited-time shop held in Omotesando that handled terahertz. Various exhibitors from different regions who were researching terahertz had gathered. I heard that just having it can align your chakras and make you less susceptible to negative influences. At the time, I was prone to illness, so I tried various things, including terahertz. I don't know if it's thanks to the terahertz, but I've become healthy and don't need to rely on various things, so I'll pass it on to someone. I used to wear it around my neck, so there is some wear and tear. The rubber part inside has discolored, possibly from dust, although it's not very noticeable from a distance. The clasp is also slightly black. I wiped it with alcohol, but I will wipe it again before shipping. Valuable terahertz and, I believe, crystal... I think this combination is rare! I'll pass it on to someone if you'd like!