2.83-Carat Gold and Blue Bicolored Montana Sapphire (Heated)


A remarkable gold and blue bicolored Montana sapphire in a custom square cushion design, quite large for Montana, 2.83 carats.

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This remarkable heated Montana sapphire is an unusual combination of a deep golden yellow and light blue–a rare and unusual color combination. 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. This gem has excellent clarity, giving it wonderful brilliance in the hand.

This sapphire is faceted in my custom “Aurora” brilliant square cushion design that I’ve created and optimized for sapphire; the result is a glittering beauty of a gemstone.  It is quite large for a Montana sapphire–the gem weighs 2.83 carats and measures 7.3 x 5.5 mm.  It would make an amazing center stone for a unique and one-of-a-kind engagement ring.

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