This Montana Sapphire, from 20-year-old stock, was originally mined from the Missouri river gravels. Faceted in Montana, this heat-treated gemstone is a deep blue with a hint of teal. This sapphire would be perfect in a ring or small pendant. This gemstone comes with an estimated retail appraisal of $950 (see below). For further information on the various types of appraisals, including the difference between estimated retail and insurance appraisals, please see our section describing the various types of appraisals.