Why are there sapphires in Montana?

The sapphires from the Missouri river deposits have been known to produce the largest sapphires from Montana. The gold rush sent prospectors up every river and creek in Montana in search of gold. In some cases, gold was not found, but sapphires were — and in abundance!

Why does Montana have a sapphire?

Montana is known as the Treasure State because it is rich in many mineral and gemstone sources, including two types of sapphires: the Yogo Sapphire from the central area of the state, and Fancy Montana Sapphires found mostly in the western half of the state.

What is special about Montana Sapphire?

A durable stone with excellent toughness, it also ranks nine on the Mohs scale of hardness. Montana sapphire is not likely to scratch or chip, making it a great choice for daily wear. High heat could damage the stone’s color or clarity.

Why are Montana sapphires so expensive?

The rough stones tend to be small and flat, so less than 10% of cut pieces end up being more than one carat in size. Because of this, the price of Yogos increases sharply after 0.5 carats. Anything in the neighborhood of 1 carat or above will be very expensive.

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Are Montana sapphires valuable?

Montana Sapphire

To be specific, the majority is under 1/2ct and a very limited supply of the sapphires are over 1ct, which makes the stone substantially more expensive per carat. Typical Montana sapphire can cost anywhere from $250-$1500 per carat for under 1/2ct to upwards of $7000 per carat for larger than 5 carats.

Where can I dig for Montana sapphires?

Montana’s many colored sapphires are mined in the famous placer gravels in the Sapphire Mountains near Philipsburg about 200 miles northwest of Yellowstone National Park. Most of the sapphires are found in the famed Rock Creek deposit, nicknamed “Gem Mountain.” Gold miners discovered sapphires there in the 1890’s.

How rare are Montana sapphires?

Considering that a rough nugget will yield a cut stone only about 1/3 of the original size means that large, fine quality faceted Montana sapphires are very rare. It is uncommon to see a fine quality faceted Montana sapphire weighing over 2 carats, gems over 3 carats are extremely rare.

What color sapphire is the most expensive?

In terms of color, pure blue sapphires are the most highly prized, and therefore tend to be the most expensive. This is one of the qualities of the Kashmir sapphire, said to be like “blue velvet” in their appearance.

How can you tell if a sapphire is real or not?

The Fog Test

If you’re looking at a sapphire and want to confirm it’s authenticity, just breath on it for a second. On real sapphires, the fog from your breath will evaporate very quickly (~2 seconds). If it’s fake, it may take 5 seconds or more to start evaporating and 2-3 seconds to actually evaporate.

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Are Yogo sapphires only found in Montana?

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 from only limited area, named Yogo Gulch, located in the Little Belt Mountains of Montana.

Are all Montana sapphires heat treated?

The majority of my Montana sapphires are unheated, as I strongly prefer to cut and sell a completely natural gemstone. That said, I do have some stones heated. The work required to mine each sapphire is significant, and they are rare gems, even when they require heat to reach their full potential.

Are there sapphires in Montana?

Montana is known as the Treasure State because it is rich in many mineral and gemstone sources, including two types of sapphires: the Yogo Sapphire from the central area of the state, and Fancy Montana Sapphires found mostly in the western half of the state.

Are teal sapphires real?

Teal sapphire is a unique and special variety of corundum that features two of nature’s most majestic colors: deep ocean blue and vivacious green. … Since teal sapphires are relatively new on the market, information about them is still quite scattered.

How much are Yogo sapphires worth?

Because of their fine quality, the price differential between Yogo and other fancy Montana sapphires can be significant. Baide said that other Montana sapphires can average about $1,000 per carat, compared with somewhere around $10,000 per carat for a Yogo sapphire.

What kind of rock are Yogo sapphires found in?

They are found in a system of igneous intrusions called dikes. There are six main dikes that form the centre of the Yogo sapphire deposit. All are composed of a type of igneous rock called a lamprophyre.

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Can you heat treat sapphires at home?

The easiest way to improve clarity and color of low-grade sapphires is to mimic the natural process and apply heat via an oven or furnace. Heating a sapphire at high temperatures specifically dissolves inclusions known as “silk” and other impurities, making the gemstone more valuable.

Shine precious stones