Today, some more common Montana sapphires can fetch $1000—$4000 a carat, ... In the late 19th century, Tiffany & Co. started using Montana sapphires in their jewelry designs.

The Missouri River near Helena is a hot spot for sapphire mining in the summer, but only certain sapphires can be transformed from rugged rocks to shining jewelry.

The yogo sapphire is one of the rare and precious things that make Montana truly the Treasure State. Randy and Katie Gneiting have been mining this gem from Central Montana for about 30 years ...

Montana's history is rich with stories of mining. In Helena there was gold, in Butte it was copper, but just off the banks of the Missouri River and Hauser Lake, there's a different type of mining ...

Montana's history is rich with stories of mining. In Helena there was gold, in Butte it was copper, but just off the banks of the Missouri River and Hauser Lake, there's a different type of mining ...

On Tuesday March 5th at 7pm, Mr. Jim Hutchings, an expert on the physics and chemistry of mineral formation, will speak at the Nevada County Gem & Mineral Society meeting. He will give an informative ...

Montana's history is rich with stories of mining. In Helena there was gold, in Butte it was copper, but just off the banks of the Missouri River and Hauser Lake, there's a different type of mining ...

Montana's history is rich with stories of mining. In Helena there was gold, in Butte it was copper, but just off the banks of the Missouri River and Hauser Lake, there's a different type of mining ...