Herkimers (Double crystal) from the United States.

The Herkimer diamond is a difficult to obtain, rare type of quartz crystal and belongs to the group of angel stones. Herkimer Diamond, also spelled 'Herkimmer', is a type of Diamond that has similar properties to Rock Crystal but a bit more powerful. Herkimer (found in Herkimer, New York) energizes and promotes creativity. It is a powerful crystal to attune with, especially the small, clear variety. It stimulates mental abilities such as clairvoyance and stimulates the memory and understanding of dreams. Herkimer facilitates liberation and transformation and brings out the soul's purpose. In addition to all this, it has powerful grounding qualities so that the higher energy can easily be integrated into the (light) body and daily life. Herkimer is also known for its powerful effect against (electromagnetic) radiation, so it protects you against the negative effects of mobile phones, PCs and transmission towers.