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.
Are Yogo sapphires expensive?
Yogo sapphires tend to be beautiful, small, and very expensive. The United States Geological Survey and many gem experts have stated that Yogo sapphires are “among the world’s finest sapphires.” The roughs tend to be small and flat, so cut Yogo gems heavier than 2 carats (0.40 g) are rare.
Are Yogo sapphires rare?
These Yogo Sapphires are extremely rare. If mining resumes, deeper mining will be needed to find these beautiful gems. Between mine closures and a need for deeper mining, the ultimate cost to recover these stones will increase.
Are Yogo sapphires more expensive than diamonds?
Brilliant, beautiful and highly prized, the Yogo sapphire is the most precious gemstone mined in the United States and is an official gemstone of Montana. Breathtaking to behold, the Yogo sapphire is found only in Montana. Yogos are unique among the sapphires of the world.
How can you tell a Yogo sapphire?
Often, they appear blue in daylight and violet to purple in incandescent light. Pale colors shift from sky blue to lavender. Yogo sapphires have a beautiful deep cornflower blue color without any treatment. However, these stones tend to be small, with few above 0.5-ct.
Why are Yogo Sapphires so expensive?
The term ‘Yogo’ refers to the Yogo Gulch in the Little Belt Mountains, east of Great Falls. … While it is estimated that 5.6 tons (or 28 million carats) of Yogo Sapphires are still in the ground, the excavation of them is costly and difficult, which keeps their scarcity and relative price high.
Do Montana sapphires have value?
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. Price is dependent on the quality of the gemstone (ie color, clarity, cut, and carat).
What is unique about Yogo sapphire?
Yogo sapphires are unique in that they are free of cavities mostly ,and have high uniform clarity, and do not need heat treating because their cornflower blue coloring is uniform and deep. Montana sapphires generally come in a variety of colors, but yogo sapphires are almost always blue.
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.
How do you clean Yogo sapphires?
If your sapphire engagement ring is really dirty, you can let it soak in the water to loosen up the grime. Lightly scrub your sapphire and sapphire jewelry with the soft bristled toothbrush. Rinse and dry with a soft and clean cloth, repeat if necessary.
What is the most expensive sapphire?
Blue Belle of Asia – The Most Expensive Blue Sapphire
The Blue Belle Of Asia earns the title of the most expensive blue sapphire in the world, after selling for $17,305,996 at Christie’s Geneva in November 2014.
What is the most expensive birthstone?
The priciest and most prized of all the birthstones, those born in April have the double-edged sword of having diamonds assigned to their birth month.
Is Sapphire OK for an engagement ring?
Because of its toughness, sapphires are great gemstones for everyday wear and jewelry pieces that will get a lot of use like engagement rings. Sapphires also do not have “cleavage,” meaning they do not easily break when struck.