1.38-Carat Blue-Green Bicolored Montana Sapphire

1.38-Carat Blue-Green Bicolored Montana Sapphire


A gorgeous blue-green bicolored unheated Montana sapphire faceted in my custom Helena brilliant oval design, 1.38 carats.

Out of stock


This beautiful unheated Montana sapphire is an unusual combination of teal blue and green, creating a unique bicolored effect.  The gem has good clarity, with just one feather, just barely visible without a loupe.  It is far less prominent in person than the photo implies.  I have factored the inclusion into the pricing, making this gem a great value for the size and color.

This sapphire is faceted in my custom oval brilliant design I created just for Montana sapphire.  The design is called “Helena” in honor of the capital of Montana, located near the sapphire mines on the Missouri River in Montana. The gem weighs 1.38 carats and measures 7.0 x 5.9 x 4.3 mm.  It would make a superb center stone 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/