Tumbled Amazonite / 30-50mm AVG - 1 LB. LOT #2 Average size range: 20 to

Average size range: 20 to 45 millimeters

Pieces measure approximately 3-5 inches

Mangano calcite

Pieces measure approximately 50 millimeters

Tumbled Amazonite / 30-50mm AVG - 1 LB. LOT #2 Average size range: 20 toQuantity: 1 pound Average size range: 30 to 50 millimeters Amazonite is a potassium based feldspar, similar to the igneous mineral microcline. The source of amazonites green color is surprisingly complex, possibly coming from water and lead, rubidium, thallium, divalent iron, or some combination of all of these. The earliest known samples of amazonite jewelry come from Middle Egypt and Mesopotamia, although it was not known as a distinct gemstone