The cotton cords on our Celestite pendants measure aprox. 26 inches long but the actual lenght to put your head through is around 25 inches. If you have a big melon housing a big brain you may want to keep this in mind...
 
Not waterproof. 
 
Celestite is a softer crystal that works with the Hypothalamus Gland Energy in the brain and the Heart Energy to create Understanding.  
It’s frequencies enhance the flow of Heart and Hypothalamus frequencies with each other, quickly creating deeper and enhanced frequencies of Understanding.
 
Amethyst, Citrine, and Silver work well with it.