1.37-Carat Aqua Blue Montana Sapphire (Heated)

1.37-Carat Aqua Blue Montana Sapphire (Heated)



A  gorgeous aqua blue heated Montana sapphire in my custom “Helena” brilliant oval design, 1.37 carats.

Out of stock


This heated Montana sapphire is a gorgeous aqua blue, reminiscent of the tropical waters of the Caribbean 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.  The sapphire has excellent clarity, making it bright and scintillating in the hand.

This sapphire is faceted in my custom “Helena” brilliant oval design that has been optimized for sapphire.  The gem weighs 1.387carats and measures 6.9 x 5.8 x 4.4 mm.  It would make a superb center stone for a one-of-a-kind 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/