Montana Yogo Sapphire was discovered by gold miners in the 1800's near Yogo Gulch, Montana not far from the city of Utica.
This variety of Sapphire occurs as small crystals mined from lead very similar to diamonds that are mined in Africa.
This variety of corundum is famous for its distinctive cornflower blue color.
The hardness of 9 ranks second, only to diamond and can only be found in Montana. These gemstones are very durable and can be enjoyed in any type of jewelry for many years.