1.03-Carat Mint Green Montana Sapphire Trillion

1.03-Carat Mint Green Montana Sapphire Trillion


A beautiful mint green unheated Montana sapphire in a custom trilliant design, 1.03 carats.

In stock


This beautiful unheated Montana sapphire is gorgeous mint green color–green tinted by a hint of blue.  Like many Montana sapphires, it can shift color–in daylight it can appear more blue-green than green.  This sapphire is unheated and untreated in any way.  There is a tiny amount of natural rutile silk that is proof of its unheated status and a tiny inclusion visible in this macro image, but neither of these are visible without a loupe.

This gem is faceted in a custom brilliant trillion design (a “trilliant”), modified and optimized for Montana sapphire.  The resulting gemstone is incredibly bright and scintillating in the hand.  The gem weighs 1.03 carats and measures 6.6 x 3.9 mm; it would an ideal stone for a unique 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/