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"Yogo sapphire" is the preferred term for gems found in the Yogo Gulch, whereas "Montana sapphire" generally refers to gems found in other Montana locations. More gem-quality sapphires are produced in Montana than anywhere else in North America. Sapphires were first discovered in Montana in 1865, in alluvium along the Missouri River. Finds in ...
An uncut, rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana. Sapphire is one of the two gem-varieties of corundum, the other being ruby (defined as corundum in a shade of red). Although blue is the best-known sapphire color, it occurs in other colors, including gray and black, and also can be colorless.
Utica is an unincorporated community in west-central Judith Basin County, Montana, United States. It is approximately 40 miles (64 km) from Lewistown [3] at the intersections of Pig Eye Road, Montana Route 239 (the "Utica highway"), and Montana Route 541. Yogo sapphires were found near Utica in the mid-1890s. [4] Judith River Ranger Station is ...
The sapphires, called Yogo sapphires as they are mined near Yogo Creek, occur in a formation three miles (4.8 km) long and eight feet (2.4 m) across. [ 1 ] The mountains are named for a butte in the range, Belt Butte, itself named for a band of white rock which encircles it.
Montana (/ m ɒ n ˈ t æ n ə / ⓘ mon-TAN-ə) [7] is a landlocked state in the Mountain West subregion of the Western United States.It borders Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, and the Canadian provinces of Alberta, British Columbia, and Saskatchewan to the north.
The Sapphire Mountains are a range of mountains located in southwestern Montana in the northwestern United States.From a point near the Clark Fork River and the city of Missoula, they run in a southerly direction for a distance of approximately 60 miles (100 km), making up much of the border between Ravalli County (to the west) and Granite County.
Princess Diana’s sapphire ring (which now belongs to Kate Middleton) is probably the most famous engagement ring in the world, and the story behind it is pretty unusual. Mostly because—unlike ...
In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...