United States

Montana (USA)

The sapphire deposits of Montana — Rock Creek, the Missouri River bars, and the famous Yogo Gulch — produce North America's finest sapphires. Yogo sapphires are renowned for their uniform cornflower blue and natural, untreated clarity, occurring in a unique igneous dike. Ethically mined and traceable, Montana sapphires have become a sought-after choice for those who value American provenance.