Judith Basin County, Montana
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Judith Basin County is a county in the U.S. state of Montana. As of the 2020 census, the population was 2,023. Its county seat is the town of Stanford.
Judith Basin County Courthouse in Stanford
Yogo sapphire
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Yogo sapphires are blue sapphires, a colored variety of corundum, found in the US state of Montana, primarily in Yogo Gulch in Judith Basin County. Yogo sapphires are typically cornflower blue, a resu
Judith Basin County, Montana
…of area taken from western Fergus County and eastern Cascade County on December 10, 1920. The county derives its name from the Judith River. In 1895, Yogo sapphires were discovered at Yogo Gulch, about 15 miles southwest of Utica, which at the time was in Fergus County. In 2022 the invasive Eastern Heath Snail was…
A 0.65-carat (0.130 g) cornflower blue Yogo sapphire
A 0.43-carat (0.086 g) teardrop-shaped cornflower blue Yogo sapphire
A 0.37-carat (0.074 g) brilliant cut purple Yogo sapphire. Only about two percent of Yogo sapphires are purple.
An uncut/rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana