3.04-Carat Blue-Green Montana Sapphire (Heated)


A beautiful medium blue-green heated Montana sapphire in my custom “Helena” brilliant oval design, large for Montana at 3.04 carats.

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This beautiful heated Montana sapphire is a bright medium blue-green to teal color–one of my favorite hues found in the Montana sapphires.  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 just barely visible in the macro image, but its not visible in the hand without a 10x loupe–its an extremely clean gemstone.  Sapphires over three carats are very rare from Montana, making this a rare and desirable 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 3.04 carats and measures 9.0 x 7.5 x 5.9 mm.  It would make an amazing center stone for a unique and one-of-a-kind engagement ring!

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