1.45-Carat Pale Sky Blue Montana Sapphire (Heated)

1.45-Carat Pale Sky Blue Montana Sapphire (Heated)



A beautiful pale sky blue heated Montana sapphire, 1.45 carats.

In stock


This beautiful heated Montana sapphire is a very pale sky blue color, almost colorless, and with some colorless zones.  Unlike most of the Montana sapphires I offer, this one has been heated.  The heating was done here in the United States, in Montana, and was the only treatment done.  It is permanent and stable.  The heating dissolved the rutile silk, allowing the blue color to develop, and making the gem clear and transparent.  There is a minor internal feather in this gem, but its not visible without a loupe–the macro image makes it more apparent than it is in the hand.

This sapphire is faceted in my custom “Testudo” brilliant oval design, created and optimized for Montana sapphire; the result is a glittering beauty of a gemstone. The gem weighs 1.45 carats and measures 7.2 x 5.6 x 4.7 mm; the perfect size for an 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/

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/