0.91-Carat Medium Blue Montana Sapphire
0.91-Carat Medium Blue Montana Sapphire
0.91-Carat Medium Blue Montana Sapphire

0.91-Carat Medium Blue Montana Sapphire



A beautiful medium blue unheated Montana sapphire in a classic diamond round brilliant design, 0.91 carats.

In stock


This beautiful unheated Montana sapphire is a gorgeous bright medium blue color, representing some of the best blue to be seen in the unheated Montana sapphires.  While the macro image shows some minute rutile silk, it is not visible in person without a 10x loupe, except as tiny flashes when the gem is tilted in bright light.  In the hand its a beautiful and bright gemstone.

This sapphire is faceted in my modified version of the diamond round brilliant cut, optimized for sapphire and cut to “hearts and arrows” level of precision; the result is a glittering beauty of a gemstone.  The gem weighs 0.91 carats and measures 5.8 x 3.8 mm.  It would make an amazing center stone for a unique and one-of-a-kind engagement ring.

Additional information


AGTA Enhancement Code

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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/