The art is made from a large (167 mm long) Hornblende with Asbestos from Malmberget, Sweden.
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The model used is a large black Ferro Hornblende crystal with thin hairs of Asbestos from Malmberget, Gällivare, Norrbotten County, Sweden.
The size is 167x61x42 mm (273 gr.)
By itself, Hornblende or Asbestos is not highly valuable. However, it has many other aspects, beautiful, dangerous, and interesting at the same time. It is also a very large crystal.
It is one of the largest underground mines for ore in the world and the second-largest in Sweden. The deepest point is 1390 meters below ground. Annual production is over 5 million tonnes of iron ore.
But there is a big variety of crystals and minerals found in the mines:
Sometimes the miners hit pockets with crystals, but seldom they are collected as it would slow the work. Luckily there are workers who are trying to save/collect the most interesting stuff.
My father had friends in the mining companies in Sweden and traded minerals directly from them. Most of the stuff he got was back about 15-25 years ago. Much of this material is now long gone, and seldom seen on the market.
Videos of the specimen used for the NFT