Terahertz is a man made stone that was discovered by Japanese scientist that can give out a terahertz vibration frequency. They made Terahertz to protect the body against electromagnetic smog and harmful radiation.
However Terahertz is not dangerous if used properly and handled with care, THz radiation is non-ionizing and is considered to be safe for humans at low powers. Before using any stone/crystal, it is important to know about the side effects.
Do not expose Terahertz to water.
Using regularly, is not deadly, however it may affect your health and might lead to chakra imbalances. Try not to overexpose yourself to the radiation from Terahertz.
If you experience rashes, inflammations, or even headaches, recommended to stop working with Terahertz.
Could experience agitation or increased energy levels, may prevent sleep.
May experience dizziness due to the exposure of vibrational frequency.
I wouldn't recommend using Terahertz for Spirituality as there is still a lot to be understood about this stone.
Alternative safe stones/crystals
Black Tourmaline
Shungite
Hematite
Terahertz is hitting the market, fast, I have it in my collection sharing the side effects that I am aware of. There can be complications with this stone, therefore we strongly recommend if you wish to use it , exercise caution.
Sizes Approximately
Small Rough 6 x 4cm
Large Rough 9 x 6cm
Small Point 8cm
Large Point 10cm
Sphere 4cm