What Is A Yogo Sapphire

Yogo sapphire - Wikipedia

https://en.wikipedia.org/wiki/Yogo_sapphire

Yogo sapphires are blue sapphires, a colored variety of corundum, found in Montana, primarily in Yogo Gulch (part of the Little Belt Mountains) in Judith Basin County, Montana. Yogo sapphires are typically cornflower blue, a result of trace amounts of iron and titanium. They have high uniform clarity and … See more

Gemological Characterization of Sapphires from Yogo Gulch, …

https://www.gia.edu/gems-gemology/summer-2018-gemological-characterization-of-sapphires-from-yogo-gulch-montana

The Yogo lamprophyre is more properly called a ouachatite, a specific type of lamprophyre that is predominantly composed of phenocrysts (large crystals) of mica and …

Yogo Sapphires - Montana Gems of Philipsburg

https://montanagems.net/yogo-sapphires/

Yogo sapphires are a variety of corundum found only in the Yogo Gulch area, in Judith Basin county, Montana. This gemstone rich area was …

Yogo Sapphires | Montana Yogo Sapphire Gemology

https://gemgallery.com/yogo-sapphire-gemology

Yogo Sapphires are the most precious sapphires found in North America. They are considered to be among the finest sapphires in the world. These unique gems come …

Montana Yogo Sapphires’ Unique Gemology

https://www.gia.edu/gia-news-research/montana-yogo-sapphires-unique-gemology

While Yogo sapphires, and most other sapphires emanating from Montana, have an attractive natural blue color that commands premium prices, their small sizes and the complexities of …

Sapphire Gemstone: Price, Colors and Cut - The …

https://www.diamonds.pro/education/sapphires/

A sapphire is a precious gemstone from the corundum mineral. They are commonly known for their striking blue color, though they do appear in a number of other color varieties. Sapphires have an …

Yogo Sapphires | Goldsmith Gallery Jewelers

https://www.goldsmithgalleryjewelers.com/services/yogo-sapphires

Yogo Sapphires are the only North American stones in Great Britain’s Crown Jewels It is estimated that 28 million carats of Yogos have yet to be mined from Yogo Gulch Housed …

Moccasin Mountain Art - Yogo Sapphires

https://www.moccasinmountainart.com/yogo-sapphires

Mining efforts to date have never extended deeper than 400 feet, yet Yogo Sapphires are the most precious gemstones ever to be mined in the U.S. Yogos sapphires range in …

Montana Gem: Specializing in Yogo Sapphires

https://www.montanagem.com/

Yogo is the rarest of all Sapphires. In the late 1880s, Yogo City was like a ghost town. The hundreds of people who had come to the town looking for gold had deserted it. Only a …

Montana Sapphire - Earth's Treasury

https://www.earthstreasury.com/montana-sapphire/

Yogo sapphires are prized for their rich blue color and high clarity. In the 1890’s several other deposits of sapphires were located in Montana, all alluvial and all located while miners were looking for gold placers.