Spirit quartz, also known as cactus quartz or fairy quartz, is a unique variety of quartz that is formed in a specific way.
Cactus quartz is formed in the fissures and crevices of rocks, particularly in areas with high levels of volcanic activity. As groundwater percolates through the rocks, it dissolves minerals such as quartz and amethyst and carries them with it.
When the groundwater reaches a cavity or hollow space in the rock, it begins to evaporate, leaving behind a deposit of quartz crystals. These crystals grow in all directions, forming a cluster around a central point.
The unique aspect of cactus quartz is the way that these crystals grow. Instead of growing in a straight line like typical quartz crystals, the crystals of cactus quartz grow in a radial pattern, forming a "cactus" or "fairy" like appearance.
The color of cactus quartz can vary depending on the minerals present in the groundwater. Most commonly, cactus quartz is a pale to dark purple color, but it can also be found in shades of yellow, brown, and white. It is found only in the Magaliesberg Mountain region of South Africa, first appearing around 2001.