These natural Turquoise stones come from the Skyline Mine in Nevada. They are natural, unstabilized Turquoise Nuggets. Do to the nature of the stone, is very rare to find natural Turquoise that's has not been filled to stabilize it. These stones are completely natural.
Because Turquoise is such a soft stone, most of what is offered commercially is stabilized. If that matters to you, then you should ask your supplier if their turquoise has been treated. The Turquoise of Stone Mountain has very unique combinations of minerals that produce stones of various colors, shapes and sizes. The rock formations in the area have been studied vigorously over the years, andesite-rhyolite, limonite, porphyry iron, hornblende quartz monzodiorite, argillaceous, and carbonate sedimentary rocks including evaporites on some mountain peaks are but a few. The combination of a heavy amount of iron and magnesium creates a harder, longer-lasting natural bond in the gemstone.
I will listen for the Turquoise nugget that is singing for you.