1.03-Carat Steely Blue Montana Sapphire (Heated)


A beautiful steely blue heated sapphire from Montana, 1.03 carats.

In stock


This beautiful heated sapphire from the Rock Creek deposit in Montana is a gorgeous steely blue color. 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 gem has excellent clarity; while there is one or two tiny inclusions visible in the macro image, they are not visible in the hand without a 10x loupe.

This sapphire is faceted in the classic diamond round brilliant design; the resulting gem is very bright and lively in the hand.  It weighs 1.03 carats and measures 5.9 x 3.9 mm.  It would make an amazing center stone for a beautiful engagement ring!

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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/

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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/