1.29-Carat Blue-Green Bicolored Montana Sapphire (Heated)

1.29-Carat Blue-Green Bicolored Montana Sapphire (Heated)


A beautiful blue-green bicolored heated Montana sapphire in my custom “Helena” brilliant oval design, 1.29 carats.

Out of stock


This beautiful heated Montana sapphire is a gorgeous combination of blue at the ends and green in the middle, creating a bicolored gem. 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 very good clarity with just one tiny inclusion tucked off in the corner where it can be hidden under a prong when set.

This sapphire is faceted in my custom “Helena” brilliant oval design that has been optimized for sapphire.  The gem weighs 1.29 carats and measures 6.8 x 5.8 x 4.4 mm.  It would make an eye-catching 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/