Tektite
Wisdom, Knowledge, Personal Power
Tektites help withstand mental or emotional "stumbling." Use them to diminish or overcome challenges with mental processes. Some are used for extraterrestrial communication, astral travel, and lucid dreaming. They can also strengthen one's energy field.
Chakras: Crown, 3rd eye Zodiac: All
Reference: https://www.hippiemystique.com/blogs/news/crystal-meanings/