Kamiya or Kamakhya sindoor is the auspicious prasad of the goddess Kamakhya Devi which is found only once a year in the month of June from Kamakhya Temple. It is actually a form of solid rock which is very powerful and has auspicious properties.
You can get the description of auspicious Kamakhya Sindoor is “Kalki Purana” also, where all details with uses and benefits are described.
Kamakhya Temple is most powerful Shakti Peeth among all and from this Shakti peetha Kamakhya Prasad obtain in form of Kamiya sindoor, Vastra and Jal.