The red brown web-like matrix of natural white Magnesite is responsible for its nickname “Wild Horse turquoise”. However Magnesite, like Howlite, is not a true turquoise, as it does not contain copper ore. Its luster is also duller and more like unglazed porcelain. It is found in magnesium rich rock types and often dyed blue or blue-green.
The white borate mineral Howlite received its name from the Canadian gemologist Henry How who discovered it in Nova Scotia/Canada. Because of its black veining patterns, it is often colored to imitate the more expensive turquoise gemstone. This stone is said to strengthen memory and to stimulate the desire for knowledge.
Dune beads' natural white versions with black or brown veins are nature's answer to the latest fashion.