"Out of the blue, sapphires have become nearly as popular for engagement rings as diamonds ... The world's largest mine is in central Montana." - USA Today

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"Montana sapphires are a brilliant cornflower blue." - The Houston Post "Suddenly... the gem industry is paying plenty of attention at the goings-on at Yogo Gulch." - The Wall Street Journal "It is believed that American sapphires are set in The Crown Jewels." - Richmond Times Despatch "Recent tests indicate that the 100-year-old Yogo Sapphire mine may contain the world's largest reserves of sapphire - an estimated $1 billion worth of gem-quality stones." - GEO Magazine

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