Montana sapphires are truly some of the finest quality sapphires in the world. They come in a variety of colors. They are COMPLETELY NATURAL gemstones.
Sapphire was first discovered in Montana in the late 1800’s by gold miners working the gravels of Missouri River near Helena. The gold prospectors discovered the Gem Mountain sapphire deposit in 1892. Since that time, this mine has produced 180 million carats of sapphire.
When modern heat treatment processes were introduced, Montana sapphire production went through the roof.
Unfortunately, the sapphires from this location (Gem Mountain) are usually quite small. However, the color and clarity of these gems make up for it. They come in red, orange, yellow, green, pink and blue. They also come in a combination of these colors and because of their color changes under evening lighting they are extremely unique.
Most of the gem grade sapphire in the market place is heat-treated. When Montana sapphire is properly heat treated, they explode with color. Diamond cutting brings out a brilliance under various lighting conditions that is unique to these gemstones. It is very difficult to find Montana sapphires that are gem quality without being heat-treated.
There are four basic Montana sapphire regions but Rock Creek is known for its distinctly sharp colors. The colors range from cornflower blue to red/orange to mint green. Spokane Bar and Eldorado Bar are other sapphire regions and located on either side of Houser Lake.