5.62-Carat Deep Blue-Green Montana Sapphire (Heated)

$16,800.00

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A beautiful deep blue and blue-green heated Montana sapphire, very large for the locale at 5.62 carats.

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SKU: MS1395 Categories: , ,

Description

This is a true rarity–a Montana sapphire over five carats.  Any natural sapphire over five carats is quite rare, but sapphires of this size are extremely rare from the deposits in Montana.  The crystal was cylindrical, with the long axis of the crystal on a-axis, which in these sapphires is a blue-green color, while the c-axis–on the ends–is blue.  Normally I try to cut all of my sapphires on the c-axis for the blue color, but that would have been too wasteful in this case, so I cut it on the long a-axis.  Because I cut it on the a axis, the ends of the gem bring in the deep blue color of the c-axis while the center shows the green of the a-axis.  The gem shows flashes of deep blue and green-blue as its tilted in the hand and the effect is quite beautiful.  I had this sapphire heated in Montana as there was a lot of natural rutile silk in it.  The treatment improved the color and clarity of the gem and is permanent and stable.

This sapphire is faceted in a custom radiant rectangle design; the resulting gem is very bright and lively in the hand. While there are a few tiny natural inclusions visible in the macro images, they are too small to see in the hand without a 10x loupe–its an eye clean gemstone. It weighs 5.62 carats and measures 11.7 x 7.4 x 6.4 mm.  It would make an amazing center stone for a beautiful engagement ring!

Additional information

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Video Request

Although we do our best to take the highest quality images, sometimes it can be difficult to envision how it will look on your hand. We can take a video of up to four gems side by on the hand to help you compare them and see how they perform in daylight. Please provide the following information, and include the SKU numbers or links to the stones you would like to see a video of.

Please note that we don’t do 360-degree videos as colored gems are optimized to be viewed face up, and because the current technology is such that none of the 360-degree systems we have tested provides the accurate color.  Our desire is to present the most honest and accurate color possible!

Similar Gems

Natural Gemstone Jewelry & Loose Gemstones at Earth’s Treasury

Welcome to Earth’s Treasury! If you’re looking for beautiful precision-cut loose gemstones or custom-designed natural gemstone jewelry, you’ve come to the right place. Earth’s Treasury features one of the widest selections of ethically sourced colored gemstones available online. We work closely with professional artisans who craft beautiful jewelry using gemstones that come directly from the mine to the market. Sapphires, rubies, emeralds, tourmalines, tanzanite, aquamarine—we have it all!

At Earth’s Treasury, we love the process of working with clients to help make their custom natural gemstone jewelry vision come to life. Whether you prefer a classically styled piece or a truly unique custom design, we can make it happen. We will work with you through the design, prototyping, casting, and production processes to craft your dream piece of jewelry.

While our collections contain colored gemstones from all over the world, our true passion is for North American gemstones. We work with American miners to source stones such as the brilliant Montana sapphire, gorgeous Oregon sunstone and colorful tourmaline from California and Maine. There is a remarkable diversity of colored gemstones available right here in America, many of which are rarer and more valuable than diamonds!

If you have any questions about our collection, don’t hesitate to reach out to us. We’re here to help you through the process of finding the perfect natural gemstone jewelry or loose gemstones online.