This lovely unheated Montana sapphire is a gorgeous sky blue color–a classic Montana sapphire color. 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 a light amount of natural rutile silk in this gem, but overall it does not effect the brilliance much–this is still a beautiful glittering gemstone.
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. The gem weighs 2.11 carats and measures 6.6 x 5.1 mm. It would make an amazing center stone for a unique and one-of-a-kind engagement ring.