Very Rare and Powerful, 750 million years older than Nuummite. 

• Dimensions 11 mm tumbled stones on a comfortable elastic 7" band 
• Weight  35-40 grams
• Origin: Ivigtut, Greenland

This recently discovered mineral is among the oldest known, over 3.75 billion years old, from the Archaean Eon. 
Isua rock can be very grounding, helping one to anchor one's soul into the body. It is also a stone of protection. It is helpful for removing blockages and for shielding against negative energy.

It is both balancing and energizing, and, due to its ancient age, can be useful in travelling through both time and space of this world. It helps to reconnect with the state of consciousness in which one first arrived to the Earth and to tap into the Earth's records.