3.04-Carat Gray-Blue Montana Sapphire (Heated)

3.04-Carat Gray-Blue Montana Sapphire (Heated)



A gorgeous gray-blue heated Montana sapphire cut in our custom “Hyperbola” brilliant oval design, 3.04 carats.

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SKU: PM2308 Category: Tags: , ,


This beautiful heated Montana sapphire is a wonderful shade of gray-blue, bringing to mind a stormy sea. The color was developed by heating the gem in Montana, but no other treatments were made to the gem. The treatment is permanent and stable and not only develops the color, but also improves the clarity. This sapphire has slight inclusions that are just barely visible to the naked eye. The inclusions have been factored into the price, making this a great value for the size and color.

I faceted this sapphire in our custom “Hyperbola” brilliant oval design. The design is very bright and creates a beautiful pattern of scintillation in the hand. The gem weighs 3.04 carats and measures  9.2 x 7.9 x 5.7 mm; the perfect size for an engagement ring.


Additional information

Weight 1 oz
Dimensions 3 × 2 × 1 in


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Product Enquiry

Do your gems come with certificates?

We're often asked about this, and yes, we do include our own certificate of origin and authenticity.  You can learn more here: https://www.earthstreasury.com/what-about-a-certificate/

Can I have a custom piece of jewelry made?

We LOVE making custom jewelry for our clients!  You can learn more about how the process works here: https://www.earthstreasury.com/the-custom-jewelry-process/

What is your return policy?

We have a one-week review and return policy that starts the date you receive your gem.  We want you to be 100% sure you have the right gem.  Learn more here: https://www.earthstreasury.com/risk-free-review-and-return-policy/