This beautiful heated Montana sapphire is a very pale sky blue color, almost colorless, and with some colorless zones. Unlike most of the Montana sapphires I offer, this one has been heated. The heating was done here in the United States, in Montana, and was the only treatment done. It is permanent and stable. The heating dissolved the rutile silk, allowing the blue color to develop, and making the gem clear and transparent. There is a minor internal feather in this gem, but its not visible without a loupe–the macro image makes it more apparent than it is in the hand.
This sapphire is faceted in my custom “Testudo” brilliant oval design, created and optimized for Montana sapphire; the result is a glittering beauty of a gemstone. The gem weighs 1.45 carats and measures 7.2 x 5.6 x 4.7 mm; the perfect size for an engagement ring.