DON-SHAT-01 Origin: Peru Grade: AA Available sizes: 28-32mm 33-37mm Origin: Namibia Grade: AA = very high Chinese PI or Donut of shattuckite (Quantum quattro) Peru AA 2 sizes to choose from: 28-32mm and 33-37mm Colors and patterns vary from one stone to another. Free waxed cotton cord Shattuckite is a relatively recent stone. In 1915, it was discovered for the first time in Bisbee, at the Shattuck mine in Arizona. That is how it got its name. This stone is a copper silicate stone. It does not contain aluminum. It is found in blue color, ranging from light blue to dark blue. It is usually associated with various stones such as chrysocolla, thus offering a unique and particular color.