1.64-Carat Light Blue-Green Montana Sapphire (Heated)

1.64-Carat Light Blue-Green Montana Sapphire (Heated)


A beautiful light blue-green heated Montana sapphire in my custom “Helena” brilliant oval design, 1.64 carats.

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This beautiful heated Montana sapphire is a lovely light blue-green color, with just a hint of yellow-green visible at times.  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.  There is one tiny inclusion but its not visible without a 10x loupe.  There is also a tiny bit of undissolved rutile silk still present, but its much less visible in the hand than it is in the photo; in the hand it’s a bright and scintillating gemstone.

This sapphire is faceted in my custom “Helena” oval brilliant design that has been optimized for sapphire; the result is a glittering beauty of a gemstone.  The gem weighs 1.64 carats and measures 7.6 x 6.4 x 4.6 mm.  It would make an amazing center stone for a unique and 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/