Montana is unique among sapphire sources for producing distinctive teal, blue-green, and bi-color sapphires that have become highly sought after in modern jewelry design. The state's main deposits include the Missouri River near Helena, Yogo Gulch, Rock Creek, and Dry Cottonwood Creek. Yogo sapphires are particularly notable for their consistent cornflower blue color that requires no heat treatment, a rarity in the sapphire world.
历史
蓝宝石最早于19世纪60年代淘金热期间在蒙大拿被发现，起初被视为毫无价值的蓝色砾石而遭丢弃。1895年，一盒蓝色宝石被寄往蒂芙尼公司，宝石学家乔治·弗雷德里克·孔兹鉴定其为美国迄今发现的最佳蓝宝石，约戈矿床由此声名大噪。
Notable Gems
Sapphire
Gemstones from this Origin
Frequently Asked Questions
What gemstones come from Montana?
Notable gemstones from Montana include Sapphire.
What is the quality tier of Montana?
Montana is classified as a premium quality mining origin.
Is mining still active in Montana?
Yes, mining is currently active in Montana, United States.
What is the mining history of Montana?
蓝宝石最早于19世纪60年代淘金热期间在蒙大拿被发现，起初被视为毫无价值的蓝色砾石而遭丢弃。1895年，一盒蓝色宝石被寄往蒂芙尼公司，宝石学家乔治·弗雷德里克·孔兹鉴定其为美国迄今发现的最佳蓝宝石，约戈矿床由此声名大噪。