Sieber Agate (Blue Obsidian)
Source: Sieber valley, Herzberg-town, Germany
This stone is actually a blue copper slag from an ancient copper foundry over 1400 years old and is named after the Sieber river in Germany where it was discovered.
Although it is sold as "agate" it is technically a glassy copper glass left from an ancient copper smelting process over 1400 years old. It characteristically contains numerous pinhead sized vesicles and is a man-made form of obsidian.
Sieber Agate as well as having the general properties of obsidian stimulates the throat chakra.
An excellent stone for someone who has to speak in public, it enhances communication. It is said to aid telepathic skills and act as a protector during traveling. It is good in relieving eye problems, it assists with speech therapy and alleviates pain.
It can also assist mental clarity with disorders such as Alzheimer's disease, schizophrenia, and multiple-personality confusion.