Genuine clear quartz.
Notable facts:
Quartz crystals were present in the African jewels from the Predynastic period and are worn today.
"Quartz crystals have technological applications that are related, in a sense, to transforming energy. In technical terms, quartz is piezoelectric, meaning it can transform energy from one form to another."

"The Romans used clear quartz as a way to keep them cool during hot months. The ancient Egyptians used it in talismans and often buried it with their dead. "

Formula: SiO2
Areas of influence: Awareness, clarity, amplification of other crystals, power, harmony, energy, healing.