This is a beautiful quartz cluster was mined at Ron Coleman Mining and enhanced. Irradiation is the process putting a crystal through high ionizing radiation that changes change the optical properties such as the color of the crystal. Irradiation of stones has been done since the 1900's and is highly regulated.
It measures approximately 3 inches tall by 2.5 inches wide.
The beautiful black to white tones in this quartz crystal are beautifully unique as a home decor accent.