High quality fire & ice. Full of pretty rainbows.
It is also known as rainbow quartz and crackle quartz. These free standing points have many internal fractures which help in creating rainbows, so depending on which angle you position it will determine how many you see. It’s very mesmerising.
These are formed by thermo shock. Which means a high quality piece of quartz has been exposed to high temperatures causing more fractures than normal. It’s a manual procedure of its natural process but much more dramatic!